DOCSLIB.ORG

Connecting to Informix Databases the Open Source

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Connecting to Informix Databases the Open Source Platform: IBM Informix Dynamic Server 10.00 Connecting to IBM Informix Dynamic Server – the Open Source Way Jonathan Leffler STSM, IBM Informix Database Engineering Session: K12 2005-05-26 08:30 Agenda • Open Source • Underlying connectivity • ESQL/C • ODBC • JDBC • Perl, DBI, and DBD::Informix • Tcl/Tk, isqltcl • PHP • Python • Ruby 2 Open Source • What is Open Source? • Which rock have you been hiding under? • Software released under an Open Source license • Conformant with the Open Source Definition • Found at http://www.opensource.org/ • Free Redistribution • Source Code • Derived Works Permitted • No Discrimination Against People or Groups • No Discrimination Against Fields of Endeavour • Distribution of License 3 Open Source Licenses • There are many alternative Open Source licenses • GPL – GNU Public License • LGPL – Lesser GNU Public License • BSD – Berkeley Systems Distribution • MIT – Massachussetts Institute of Technology (X) • MPL – Mozilla Public License • Academic Free License • Open Software License • Nearly 60 licenses listed at the Open Source Initiative! 4 Informix Database Connectivity • ESQL/C • The original connectivity. • Standardized in SQL standards (ISO/IEC 9075:1992 onwards). • ODBC • Originally defined by Microsoft. • Standardized (as CLI) by ISO/IEC 9075-3:1996. • JDBC • Java analogue of ODBC. • Standardized by Sun. • All of these are proprietary. • But can be used with Open Source software. 5 ESQL/C • Preprocessor which converts extended C into pure C. • Links with specific libraries. • Permits separation of static and dynamic SQL. • Even though Informix does not really do so. int main(void) { EXEC SQL WHENEVER ERROR STOP; EXEC SQL DATABASE Stores; EXEC SQL BEGIN WORK; EXEC SQL DROP TABLE Customer; EXEC SQL ROLLBACK WORK; return(0); } 6 ODBC • Database agnostic. • Separates driver manager from drivers. • Different drivers can be loaded at run time. • With care, you can avoid database-specific features. • But sometimes you want to use them. • All statements are dynamic. • De-emphasized by Microsoft • In favour of newer technologies • ADO • .NET 7 JDBC • Database agnostic. • Drivers have different levels of Java-ness. • Type 4: pure Java – usually the best type to use. • The only other way to connect is ESQL/J. • Not widely accepted. • JDBC is the lingua franca of the Java database world. 8 Perl, DBI, and DBD::Informix • Perl • DBI • DBD::Informix • Apache • mod_perl 9 Perl – Practical Extraction and Report Language • Originally written by Larry Wall • Version 1.0 in 1987 • Version 4.0 in 1991 under GPL and Artistic License • Version 5.0 in 1994 • Current stable versions: • 5.8.6 — November 2004 • 5.6.1 — August 2001 • 5.005_03 — April 2000 • Obtain via CPAN • Comprehensive Perl Archive Network • http://www.cpan.org/ 10 Perl • Script Language • Does not require compilation • Complex looking code • Can be incredibly terse • Can be quite legible • Excellent at string handling • Excellent access to operating system 11 Remove RCS Keyword Markers • #!/usr/bin/perl -wp • s/\$([A-Z][a-z]+|RCSfile): ([^\$]+) \$/$2/go; • TMTOWTDI • There’s more than one way to do it! • (Yes, you could use sed for this) • perl -wp -e ’s/\$\w+: ([^\$]+) \$/$1/go;’ $* 12 File Renaming #!/usr/bin/perl # @(#)$Id: rename.pl,v 1.1 1992/01/05 22:33:47 jl Exp $ # Rename files using a Perl substitute command ($op = shift) || die "Usage: $0 perlexpr [filenames]\n"; if (!@ARGV) { @ARGV = <STDIN>; chop(@ARGV); } for (@ARGV){ $was = $_; eval $op; die $@ if $@; rename($was, $_) unless $was eq $_; } 13 Perl Database Interface • DBI written by Tim Bunce. • Standard way to access databases with Perl. • Many database drivers available. • Including ODBC, DB2, and Oracle. • And, of course, Informix. • And many others. • Current version 1.48 – March 2005. • Requires Perl 5.6.1 or later. • Using Perl and a database? Use DBI! • Or a module built on top of DBI. 14 The Cheetah Book • The ‘bible’ for Perl DBI • Authors: • Alligator Descartes • Tim Bunce • O’Reilly, February 2000 • ISBN 1-56592-699-4 • http://www.oreilly.com/ 15 DBI - Database Handles • Load DBI • use DBI; • Create database handles • $dbh = DBI->connect(‘DBI:Informix:stores7’); • Database methods • $dbh->do(‘DELETE FROM Customer’); • Transaction control • $dbh->rollback; • $dbh->commit; • Disconnect • $dbh->disconnect; 16 DBI - Statement Handles • Create statement handles • $sth = $dbh->prepare(qq{ DELETE FROM Customer WHERE Lname LIKE ‘%$name%’ AND ZipCode IS NULL }); • Statements can be executed • $sth->execute(); • Statement handles can be released • Implicitly • Statement handle goes out of scope • Explicitly • undef $sth; 17 DBI - Handling SELECT • Statement handles are used for SELECT too • $sth = $dbh->prepare(qq% SELECT * FROM Customer WHERE Fname = ? AND Lname = ? ORDER BY Lname, Fname%); • $sth->execute($firstname, $surname); • @results = $sth->fetchall_arrayref; • …process results • print $results[$rownum][$colnum], etc • undef $sth; • SELECT is fairly simple 18 DBI - Handling SELECT • Many ways to fetch rows • $sth->fetchrow_array • $sth->fetchrow_hashref • $sth->fetchrow_arrayref • $sth->fetchall_arrayref • All rows • Also utility methods • $dbh->selectrow_array • First row only • $dbh->selectall_arrayref 19 DBD::Informix - at last • Using DBD::Informix is using DBI • All the examples work with DBD::Informix • Current version is 2005.01 – March 2005 • Building DBD::Informix is easy • Requires working ESQL/C 5.00 or later (eg ClientSDK) • ANSI C compiler (code uses prototypes) • Test database with DBA privileges • Perl version 5.6.0 or later • 5.8.6 (or, at a pinch, 5.6.1) strongly recommended • DBI version 1.38 or later • Version 1.48 or later strongly recommended 20 Installing DBD::Informix • Download software from CPAN • cd DBD-Informix-2005.01 • more README • perl Makefile.PL • make • make test • make install • Have fun! • Same rules apply to all Perl modules • Building Perl modules is easy! 21 DBD::Informix - example #! /usr/bin/perl -w use DBI; $dbh = DBI->connect(‘DBI:Informix:stores7’,’’,’’, {RaiseError => 1, PrintError=>1}); $sth = $dbh->prepare(q%SELECT Fname, Lname, Phone FROM Customer WHERE Customer_num = ? %); $sth->execute(106); $ref = $sth->fetchall_arrayref(); for $row (@$ref) { print “Name: $$row[0] $$row[1], Phone: $$row[2]\n”; } $dbh->disconnect; 22 DBD::Informix & AutoCommit • AutoCommit is on by default • To comply with DBI requirements • Cannot be unset on unlogged databases • Simulates MODE ANSI on logged databases • Explicit BEGIN WORK is possible • $dbh->do(‘begin work’); • $dbh->{AutoCommit} = 0; • $dbh = DBI->connect(‘DBI:Informix:stores7’, ‘’, ‘’, { AutoCommit => 0 }); 23 Standard DBI Information • Standard database attributes • $dbh->{Driver} • $dbh->{AutoCommit} • $dbh->{PrintError} • $dbh->{RaiseError} • $dbh->{ChopBlanks} • There are others, too. 24 Standard DBI Information • Standard statement attributes • $sth->{Statement} • $sth->{CursorName} • $sth->{NUM_OF_FIELDS} • $sth->{NUM_OF_PARAMS} • $sth->{NAME} • $sth->{TYPE} • $sth->{NULLABLE} 25 Standard DBI Information • Standard handle attributes • $h->err • $h->errstr • $h->state • Standard handle methods • $h->trace($trace_level) • $h->trace_msg(“message”) 26 Informix-only Information • SQLCA is available • $sth->{ix_sqlcode} • $sth->{ix_sqlerrd} - an array • $sth->{ix_sqlerrm} • $sth->{ix_sqlerrp} • $sth->{ix_sqlwarn} - an array 27 Informix-only Information • Non-standard attributes • $dbh->{ix_InformixOnline} • $dbh->{ix_LoggedDatabase} • $dbh->{ix_ModeAnsiDatabase} • $dbh->{ix_InTransaction} • $dbh->{ix_ConnectionName} • Standard attribute • $dbh->{Name} — database name 28 Informix-only Information • Non-standard attributes • $drh->{ix_ProductVersion} • a version number for ESQL/C • $drh->{ix_ProductName} • $drh->{ix_MultipleConnections} • $drh->{ix_ActiveConnections} • $drh->{ix_CurrentConnection} • $drh->{ix_ServerVersion} • a version number for the database server • All these attributes can also be found via the database handle, $dbh 29 Informix-only Information • Non-standard attributes • $sth->{ix_NativeTypeName} • $sth->{ix_ColType} • $sth->{ix_ColLength} 30 DBD::Informix • Known Limitations: • Not yet fully aware of 9.x collection types or UDTs. • No support for bind_param_inout method. • No handling for most new DBI features since v1.14. • Version 1.00.PC2 was an official Informix product. • Officially “IBM Informix Database Driver for Perl”. • Version 2003.04 was officially not an IBM product. • The support channel is the mailing list: • [email protected] • [email protected] • [email protected] 31 DBD::Informix Documents • Primary References • Pre-install • README file • Files in Notes sub-directory • Post-install • perldoc DBI • perldoc DBD::Informix • Books • Programming Perl, 3rd Edition • Programming the Perl DBI 32 DBD::Informix - Web Sites • Use CPAN to obtain the software • http://www.cpan.org/ • http://search.cpan.org/ • perl –MCPAN –e ‘install Bundle::DBD::Informix’ • DBI web site • http://dbi.perl.org/ • Sign up for [email protected] mailing list • Help yourself - join the mailing list! 33 Apache • Apache Web Server • Most widely used web server • Version 1.3.33 • unless there’s a new version this week • Or Version 2.0.52 • Modular structure • Allows special purpose modules to be added • mod_jserv - Java Server • mod_perl - Perl Interpreter 34 Apache, Perl and CGI • CGI scripts drive the web • Many of them are Perl scripts • Most of those use the CGI module • http://www.somewhere.com/cgi-bin/script.pl • Giveaway that there’s a Perl script in use • Often
Load more

Recommended publications
  • Differential Fuzzing the Webassembly
    Master’s Programme in Security and Cloud Computing Differential Fuzzing the WebAssembly Master’s Thesis Gilang Mentari Hamidy MASTER’S THESIS Aalto University - EURECOM MASTER’STHESIS 2020 Differential Fuzzing the WebAssembly Fuzzing Différentiel le WebAssembly Gilang Mentari Hamidy This thesis is a public document and does not contain any confidential information. Cette thèse est un document public et ne contient aucun information confidentielle. Thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Technology. Antibes, 27 July 2020 Supervisor: Prof. Davide Balzarotti, EURECOM Co-Supervisor: Prof. Jan-Erik Ekberg, Aalto University Copyright © 2020 Gilang Mentari Hamidy Aalto University - School of Science EURECOM Master’s Programme in Security and Cloud Computing Abstract Author Gilang Mentari Hamidy Title Differential Fuzzing the WebAssembly School School of Science Degree programme Master of Science Major Security and Cloud Computing (SECCLO) Code SCI3084 Supervisor Prof. Davide Balzarotti, EURECOM Prof. Jan-Erik Ekberg, Aalto University Level Master’s thesis Date 27 July 2020 Pages 133 Language English Abstract WebAssembly, colloquially known as Wasm, is a specification for an intermediate representation that is suitable for the web environment, particularly in the client-side. It provides a machine abstraction and hardware-agnostic instruction sets, where a high-level programming language can target the compilation to the Wasm instead of specific hardware architecture. The JavaScript engine implements the Wasm specification and recompiles the Wasm instruction to the target machine instruction where the program is executed. Technically, Wasm is similar to a popular virtual machine bytecode, such as Java Virtual Machine (JVM) or Microsoft Intermediate Language (MSIL).
    [Show full text]
  • DM2 Week 15 PHP Mysql.Pptx
    PHP and MySQL ATLS 3020 Digital Media 2 Aileen Pierce Web Database Applications PHP Working with Databases ¤ PHP scripts can easily access many different databases ¤ MySQL ¤ Oracle ¤ Informix ¤ mSQL ¤ ODBC ¤ PHP provides functions that begin with mysqli_ to access MySQL databases. PHP Communicating with MySQL ¤ PHP works with MySQL using the following process: 1. Connect to MySQL 2. Prepare a SQL statement 3. Execute the statement and save the result 4. Extract the data from the result 5. Prepare the resulting page Connecting PHP to MySQL ¤ Connect to MySQL $dbc= mysqli_connect(“hostname”, “username”, “password”, “db_name”); ¤ Hostname is the URL of the MySQL server. ¤ Use localhost if PHP and MySQL servers are on the same machine (as on redwood). ¤ Username and password are for MySQL. ¤ Database name is identikey+db (apiercedb) ¤ Must assign the connection to a variable to use throughout your script. Connecting PHP to MySQL ¤ mysqli_connect_error() returns an error if the connection is not made. $dbc= mysqli_connect(“hostname”, “username”, “password”, “db_name”) OR die ('Could not connect to MySQL: ' . mysqli_connect_error() ); ¤ die() will cause the script to exit ¤ Prints out an error message SQL Statements ¤ The mysqli_query() function allows you to pass any SQL command to the database and the result is returned. $result= mysqli_query(“db connection”, “SQL”); ¤ Use phpmyadmin to help you create the SQL statement $result = mysqli_query($dbc, “SELECT * from drink” ); SQL Statements ¤ Or assign the SQL statement to a variable $sql = “INSERT INTO drink (name, caf, whip, calories) VALUES ('cappuccino', 'yes', 'no', '90')”; ¤ Then pass the SQL statement to the database connection $result = mysqli_query($dbc, $sql); ¤ You must assign the result to a variable.
    [Show full text]
  • Ajuba Solutions Version 1.4 COPYRIGHT Copyright © 1998-2000 Ajuba Solutions Inc
    • • • • • • Ajuba Solutions Version 1.4 COPYRIGHT Copyright © 1998-2000 Ajuba Solutions Inc. All rights reserved. Information in this document is subject to change without notice. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means electronic or mechanical, including but not limited to photocopying or recording, for any purpose other than the purchaser’s personal use, without the express written permission of Ajuba Solutions Inc. Ajuba Solutions Inc. 2593 Coast Avenue Mountain View, CA 94043 U.S.A http://www.ajubasolutions.com TRADEMARKS TclPro and Ajuba Solutions are trademarks of Ajuba Solutions Inc. Other products and company names not owned by Ajuba Solutions Inc. that appear in this manual may be trademarks of their respective owners. ACKNOWLEDGEMENTS Michael McLennan is the primary developer of [incr Tcl] and [incr Tk]. Jim Ingham and Lee Bernhard handled the Macintosh and Windows ports of [incr Tcl] and [incr Tk]. Mark Ulferts is the primary developer of [incr Widgets], with other contributions from Sue Yockey, John Sigler, Bill Scott, Alfredo Jahn, Bret Schuhmacher, Tako Schotanus, and Kris Raney. Mark Diekhans and Karl Lehenbauer are the primary developers of Extended Tcl (TclX). Don Libes is the primary developer of Expect. TclPro Wrapper incorporates compression code from the Info-ZIP group. There are no extra charges or costs in TclPro due to the use of this code, and the original compression sources are freely available from http://www.cdrom.com/pub/infozip or ftp://ftp.cdrom.com/pub/infozip. NOTE: TclPro is packaged on this CD using Info-ZIP’s compression utility.
    [Show full text]
  • Scripting: Higher- Level Programming for the 21St Century
    . John K. Ousterhout Sun Microsystems Laboratories Scripting: Higher- Cybersquare Level Programming for the 21st Century Increases in computer speed and changes in the application mix are making scripting languages more and more important for the applications of the future. Scripting languages differ from system programming languages in that they are designed for “gluing” applications together. They use typeless approaches to achieve a higher level of programming and more rapid application development than system programming languages. or the past 15 years, a fundamental change has been ated with system programming languages and glued Foccurring in the way people write computer programs. together with scripting languages. However, several The change is a transition from system programming recent trends, such as faster machines, better script- languages such as C or C++ to scripting languages such ing languages, the increasing importance of graphical as Perl or Tcl. Although many people are participat- user interfaces (GUIs) and component architectures, ing in the change, few realize that the change is occur- and the growth of the Internet, have greatly expanded ring and even fewer know why it is happening. This the applicability of scripting languages. These trends article explains why scripting languages will handle will continue over the next decade, with more and many of the programming tasks in the next century more new applications written entirely in scripting better than system programming languages. languages and system programming
    [Show full text]
  • Oracle® Transparent Gateway for Microsoft SQL Server Administrator’S Guide 10G Release 2 (10.2) for Microsoft Windows (32-Bit) B14270-01
    Oracle® Transparent Gateway for Microsoft SQL Server Administrator’s Guide 10g Release 2 (10.2) for Microsoft Windows (32-bit) B14270-01 June 2005 Oracle Transparent Gateway for Microsoft SQL Server Administrator’s Guide, 10g Release 2 (10.2) for Microsoft Windows (32-bit) B14270-01 Copyright © 2002, 2005, Oracle. All rights reserved. Primary Author: Amitai Sela Contributing Author: Laurel Hale, Cynthia Kibbe, Kishan Peyetti, Juan Ahues-Vasquez, Govind Lakkoju Contributor: Orit Curiel, Jacco Draaijer, Vira Goorah The Programs (which include both the software and documentation) contain proprietary information; they are provided under a license agreement containing restrictions on use and disclosure and are also protected by copyright, patent, and other intellectual and industrial property laws. Reverse engineering, disassembly, or decompilation of the Programs, except to the extent required to obtain interoperability with other independently created software or as specified by law, is prohibited. The information contained in this document is subject to change without notice. If you find any problems in the documentation, please report them to us in writing. This document is not warranted to be error-free. Except as may be expressly permitted in your license agreement for these Programs, no part of these Programs may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose. If the Programs are delivered to the United States Government or anyone licensing or using the Programs on behalf of the United States Government, the following notice is applicable: U.S. GOVERNMENT RIGHTS Programs, software, databases, and related documentation and technical data delivered to U.S.
    [Show full text]
  • Ixia Tcl Development Guide
    Chapter 2: Quick Start 2 Installing the IxOS Tcl Client This chapter provides a quick means of getting started with the Tcl API. An example test is presented and explained. The IxOS Tcl Client provides an interface between an Ixia Tcl client application and Ixia IxOS Tcl functions. It runs on the Unix / Linux host. The Windows version of IxOS Tcl Client is included with the IxOS software package; the Unix/Linux version is supplied as a separate a self-extracting archive (.bin) file. You can download it from Ixia’s website, www.ixiacom.com. There are serveral versions of the IxOS Tcl Client. The correct file to install depends on the set up of the UNIX/Linux machine. Table 2-2 on page 2-1 details the files and their use. Table 2-2. Tcl Client Install Files Install File Purpose IxOS#.## For Linux versions post Redhat 9. It is distributed as genericLinux.bin a tarball (IxOS#.##genericLinux.bin.tar.gz) due to download issues. IxOS#.##linux.bin. For Linux platforms older than Redhat 9. IxOS#.##setup.jar An installer without a bundled Java Virtual Machine. This is distributed only to customers that have issues running the bin installers. It requires a Java Virtual Machine installed on the installation target. IxOS#.## For Solaris machines. solarisSparc.bin The versions of UNIX/Linux operating systems that are supported are: • Mandrake 7.2, RedHat 6.2, RedHat 7.0, RedHat 9.0 • RedHat Enterprise 4.0 IxOS Tcl Development Guide, 6.60 EA SP1 2-1 Quick Start 2 Installing the IxOS Tcl Client • Solaris 2.7 (7), 2.8 (8), 2.9 (9) Other versions of Linux and Solaris platforms may operate properly, but are not officially supported.
    [Show full text]
  • Automating Your Sync Testing
    APPLICATION NOTE By automating system verification and conformance testing to ITU-T synchronization standards, you’ll save on time and resources, and avoid potential test execution errors. This application note describes how you can use the Paragon-X’s Script Recorder to easily record Tcl, PERL and Python commands that can be integrated into your own test scripts for fast and efficient automated testing. AUTOMATING YOUR SYNC TESTING calnexsol.com Easily automate synchronization testing using the Paragon-X Fast and easy automation by Supports the key test languages Pre-prepared G.8262 Conformance recording GUI key presses Tcl, PERL and Python Scripts reduces test execution errors <Tcl> <PERL> <python> If you perform System Verification language you want to record i.e. Tcl, PERL SyncE CONFORMANCE TEST and Conformance Testing to ITU-T or Python, then select Start. synchronization standards on a regular Calnex provides Conformance Test Scripts basis, you’ll know that manual operation to ITU-T G.8262 for SyncE conformance of these tests can be time consuming, testing using the Paragon-X. These tedious and prone to operator error — as test scripts can also be easily tailored well as tying up much needed resources. and edited to meet your exact test Automation is the answer but very often requirements. This provides an easy means a lack of time and resource means it of getting your test automation up and remains on the ‘To do’ list. Now, with running and providing a repeatable means Calnex’s new Script Recorder feature, you of proving performance, primarily for ITU-T can get your automation up and running standards conformance.
    [Show full text]
  • A Relational Multi-Schema Data Model and Query Language for Full Support of Schema Versioning?
    A Relational Multi-Schema Data Model and Query Language for Full Support of Schema Versioning? Fabio Grandi CSITE-CNR and DEIS, Alma Mater Studiorum – Universita` di Bologna Viale Risorgimento 2, 40136 Bologna, Italy, email: [email protected] Abstract. Schema versioning is a powerful tool not only to ensure reuse of data and continued support of legacy applications after schema changes, but also to add a new degree of freedom to database designers, application developers and final users. In fact, different schema versions actually allow one to represent, in full relief, different points of view over the modelled application reality. The key to such an improvement is the adop- tion of a multi-pool implementation solution, rather that the single-pool solution usually endorsed by other authors. In this paper, we show some of the application potentialities of the multi-pool approach in schema versioning through a concrete example, introduce a simple but comprehensive logical storage model for the mapping of a multi-schema database onto a standard relational database and use such a model to define and exem- plify a multi-schema query language, called MSQL, which allows one to exploit the full potentialities of schema versioning under the multi-pool approach. 1 Introduction However careful and accurate the initial design may have been, a database schema is likely to undergo changes and revisions after implementation. In order to avoid the loss of data after schema changes, schema evolution has been introduced to provide (partial) automatic recov- ery of the extant data by adapting them to the new schema.
    [Show full text]
  • WHO Guidance on Management of Snakebites
    GUIDELINES FOR THE MANAGEMENT OF SNAKEBITES 2nd Edition GUIDELINES FOR THE MANAGEMENT OF SNAKEBITES 2nd Edition 1. 2. 3. 4. ISBN 978-92-9022- © World Health Organization 2016 2nd Edition All rights reserved. Requests for publications, or for permission to reproduce or translate WHO publications, whether for sale or for noncommercial distribution, can be obtained from Publishing and Sales, World Health Organization, Regional Office for South-East Asia, Indraprastha Estate, Mahatma Gandhi Marg, New Delhi-110 002, India (fax: +91-11-23370197; e-mail: publications@ searo.who.int). The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the World Health Organization concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted lines on maps represent approximate border lines for which there may not yet be full agreement. The mention of specific companies or of certain manufacturers’ products does not imply that they are endorsed or recommended by the World Health Organization in preference to others of a similar nature that are not mentioned. Errors and omissions excepted, the names of proprietary products are distinguished by initial capital letters. All reasonable precautions have been taken by the World Health Organization to verify the information contained in this publication. However, the published material is being distributed without warranty of any kind, either expressed or implied. The responsibility for the interpretation and use of the material lies with the reader. In no event shall the World Health Organization be liable for damages arising from its use.
    [Show full text]
  • Php Tutorial
    PHP About the Tutorial The PHP Hypertext Preprocessor (PHP) is a programming language that allows web developers to create dynamic content that interacts with databases. PHP is basically used for developing web-based software applications. This tutorial will help you understand the basics of PHP and how to put it in practice. Audience This tutorial has been designed to meet the requirements of all those readers who are keen to learn the basics of PHP. Prerequisites Before proceeding with this tutorial, you should have a basic understanding of computer programming, Internet, Database, and MySQL. Copyright & Disclaimer © Copyright 2016 by Tutorials Point (I) Pvt. Ltd. All the content and graphics published in this e-book are the property of Tutorials Point (I) Pvt. Ltd. The user of this e-book is prohibited to reuse, retain, copy, distribute or republish any contents or a part of contents of this e-book in any manner without written consent of the publisher. We strive to update the contents of our website and tutorials as timely and as precisely as possible, however, the contents may contain inaccuracies or errors. Tutorials Point (I) Pvt. Ltd. provides no guarantee regarding the accuracy, timeliness or completeness of our website or its contents including this tutorial. If you discover any errors on our website or in this tutorial, please notify us at [email protected] i PHP Table of Contents About the Tutorial ...........................................................................................................................................
    [Show full text]
  • Eclipse (Software) 1 Eclipse (Software)
    Eclipse (software) 1 Eclipse (software) Eclipse Screenshot of Eclipse 3.6 Developer(s) Free and open source software community Stable release 3.6.2 Helios / 25 February 2011 Preview release 3.7M6 / 10 March 2011 Development status Active Written in Java Operating system Cross-platform: Linux, Mac OS X, Solaris, Windows Platform Java SE, Standard Widget Toolkit Available in Multilingual Type Software development License Eclipse Public License Website [1] Eclipse is a multi-language software development environment comprising an integrated development environment (IDE) and an extensible plug-in system. It is written mostly in Java and can be used to develop applications in Java and, by means of various plug-ins, other programming languages including Ada, C, C++, COBOL, Perl, PHP, Python, Ruby (including Ruby on Rails framework), Scala, Clojure, and Scheme. The IDE is often called Eclipse ADT for Ada, Eclipse CDT for C/C++, Eclipse JDT for Java, and Eclipse PDT for PHP. The initial codebase originated from VisualAge.[2] In its default form it is meant for Java developers, consisting of the Java Development Tools (JDT). Users can extend its abilities by installing plug-ins written for the Eclipse software framework, such as development toolkits for other programming languages, and can write and contribute their own plug-in modules. Released under the terms of the Eclipse Public License, Eclipse is free and open source software. It was one of the first IDEs to run under GNU Classpath and it runs without issues under IcedTea. Eclipse (software) 2 Architecture Eclipse employs plug-ins in order to provide all of its functionality on top of (and including) the runtime system, in contrast to some other applications where functionality is typically hard coded.
    [Show full text]
  • G S Getting Started with Opensees
    GSGetting Started with OpenSees Vesna Terzic UC Berkeley September 2011 Agenda • ItIntrod ucti on t o O penS ees • Introduction to Tcl programming language • Demonstration of how to download OpenSees interpreter and install Tcl/Tk • Discuss ion of Open Sees Resources (comman d manual, getting started manual, examples manual, message board) • Example of how to create and run a small structure • Q&A with web participants What is OpenSees? • A software framework (written primarelly in C++) for simulation applications in earthquake engineering using finite element methods . • It is open-source software framework • AitihifhidA communication mechanism for exchanging and building upon research accomplishments • OpenSees is fast , stable , efficient in solving large nonlinear models with multiple runs • To make FEM in OpenSees you need to know basics of Tcl programing language OpenSees Framework How Do People Use the OpenSees Framework? • Provide their own main() function in C++ and link to framework. • Use OpenSees interpreters (OpenSees.exe, OSSPOSMP)ThOpenSeesSP.exe, OpenSeesMP.exe). These are extensions of the Tcl interpreters (tclsh, wish) which have been extended to commands for finite element analysis: 1. Modeling – create nodes, elements, loads and constraints 2. Analysis – specify the analysis procedure. 3. Output specification – specify what it is you want to monitor during the analysis. Being interpreters means that the files you create and submit to the OpenSees interpreters are not input files. You are creating and submitting PROGRAMS. What is Tcl? • Tcl is a dynamic programming language. • It is a string based command language . • Variables and variable substitution • Expression evaluation • Basic control structures (if , while , for , foreach) • Procedures • File manipulation • Sourcing other files .
    [Show full text]