Ecpg - Postgresql Embedded SQL/C Precompiler
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Database Application Development Overview SQL in Application Code SQL in Application Code (Contd.) Embedded SQL Embedded SQL: Va
Overview Concepts covered in this lecture: Database Application Development SQL in application code Embedded SQL Cursors Chapter 6 Dynamic SQL JDBC SQLJ Stored procedures Database Management Systems 3ed, R. Ramakrishnan and J. Gehrke 1 Database Management Systems 3ed, R. Ramakrishnan and J. Gehrke 2 SQL in Application Code SQL in Application Code (Contd.) SQL commands can be called from within a host language (e.g., C++ or Java) program. Impedance mismatch: SQL statements can refer to host variables SQL relations are (multi-) sets of records, with (including special variables used to return status). no a priori bound on the number of records. Must include a statement to connect to the right No such data structure exist traditionally in database. procedural programming languages such as Two main integration approaches: C++. (Though now: STL) Embed SQL in the host language (Embedded SQL, SQL supports a mechanism called a cursor to SQLJ) handle this. Create special API to call SQL commands (JDBC) Database Management Systems 3ed, R. Ramakrishnan and J. Gehrke 3 Database Management Systems 3ed, R. Ramakrishnan and J. Gehrke 4 Embedded SQL Embedded SQL: Variables Approach: Embed SQL in the host language. A preprocessor converts the SQL statements into special API calls. EXEC SQL BEGIN DECLARE SECTION Then a regular compiler is used to compile the char c_sname[20]; code. long c_sid; short c_rating; float c_age; Language constructs: EXEC SQL END DECLARE SECTION Connecting to a database: EXEC SQL CONNECT Declaring variables: Two special “error” variables: EXEC SQL BEGIN (END) DECLARE SECTION SQLCODE (long, is negative if an error has occurred) Statements: SQLSTATE (char[6], predefined codes for common errors) EXEC SQL Statement; Database Management Systems 3ed, R. -
Delivering Oracle Compatibility
DELIVERING ORACLE COMPATIBILITY A White Paper by EnterpriseDB www.EnterpriseDB.com TABLE OF CONTENTS Executive Summary 4 Introducing EnterpriseDB Advanced Server 6 SQL Compatibility 6 PL/SQL Compatibility 9 Data Dictionary Views 11 Programming Flexibility and Drivers 12 Transfer Tools 12 Database Replication 13 Enterprise-Class Reliability and Scalability 13 Oracle-Like Tools 14 Conclusion 15 Downloading EnterpriseDB 15 EnterpriseDB EXECUTIVE SUMMARY Enterprises running Oracle® are generally interested in alternative databases for at least three reasons. First, these enterprises are experiencing budget constraints and need to lower their database Total Cost of Ownership (TCO). Second, they are trying to gain greater licensing flexibility to become more agile within the company and in the larger market. Finally, they are actively pursuing vendors who will provide superior technical support and a richer customer experience. And, subsequently, enterprises are looking for a solution that will complement their existing infrastructure and skills. The traditional database vendors have been unable to provide the combination of all three benefits. While Microsoft SQL ServerTM and IBM DB2TM may provide the flexibility and rich customer experience, they cannot significantly reduce TCO. Open source databases, on the other hand, can provide the TCO benefits and the flexibility. However, these open source databases either lack the enterprise-class features that today’s mission critical applications require or they are not equipped to provide the enterprise-class support required by these organizations. Finally, none of the databases mentioned above provide the database compatibility and interoperability that complements their existing applications and staff. The fear of the costs of changing databases, including costs related to application re-coding and personnel re-training, outweigh the expected savings and, therefore, these enterprises remain paralyzed and locked into Oracle. -
Openvms Guide
Mimer SQL OpenVMS Guide Version 11.0 Mimer SQL, OpenVMS Guide, Version 11.0, January 2018 © Copyright Mimer Information Technology AB. The contents of this manual may be printed in limited quantities for use at a Mimer SQL installation site. No parts of the manual may be reproduced for sale to a third party. Information in this document is subject to change without notice. All registered names, product names and trademarks of other companies mentioned in this documentation are used for identification purposes only and are acknowledged as the property of the respective company. Companies, names and data used in examples herein are fictitious unless otherwise noted. Produced and published by Mimer Information Technology AB, Uppsala, Sweden. Mimer SQL Web Sites: https://developer.mimer.com https://www.mimer.com Contents i Contents .............................................................................................................................. i Chapter 1 Introduction .......................................................................................1 About Mimer SQL for OpenVMS...................................................................................1 The Mimer SQL Database Server .................................................................................. 1 Embedded SQL................................................................................................................. 1 Module SQL...................................................................................................................... -
Embedded SQL N Functions and Procedural Constructs N Triggers
CS425 – Summer 2016 Jason Arnold Chapter 6: Advanced SQL modified from: Database System Concepts, 6th Ed. ©Silberschatz, Korth and Sudarshan See www.db-book.com for conditions on re-use Chapter 6: Advanced SQL n Accessing SQL From a Programming Language l Dynamic SQL JDBC and ODBC l Embedded SQL n Functions and Procedural Constructs n Triggers Textbook: Chapter 5 CS425 – Fall 2013 – Boris Glavic 5.2 ©Silberschatz, Korth and Sudarshan Accessing SQL From a Programming Language CS425 – Fall 2013 – Boris Glavic 5.3 ©Silberschatz, Korth and Sudarshan JDBC and ODBC n API (application-program interface) for a program to interact with a database server n Application makes calls to l Connect with the database server l Send SQL commands to the database server l Fetch tuples of result one-by-one into program variables n ODBC (Open Database Connectivity) works with C, C++, C#, and Visual Basic l Other API’s such as ADO.NET sit on top of ODBC n JDBC (Java Database Connectivity) works with Java CS425 – Fall 2013 – Boris Glavic 5.4 ©Silberschatz, Korth and Sudarshan Native APIs n Most DBMS also define DBMS specific APIs n Oracle: OCI n Postgres: libpg … CS425 – Fall 2013 – Boris Glavic 5.5 ©Silberschatz, Korth and Sudarshan JDBC n JDBC is a Java API for communicating with database systems supporting SQL. n JDBC supports a variety of features for querying and updating data, and for retrieving query results. n JDBC also supports metadata retrieval, such as querying about relations present in the database and the names and types of relation attributes. -
Sql Server to Aurora Postgresql Migration Playbook
Microsoft SQL Server To Amazon Aurora with Post- greSQL Compatibility Migration Playbook 1.0 Preliminary September 2018 © 2018 Amazon Web Services, Inc. or its affiliates. All rights reserved. Notices This document is provided for informational purposes only. It represents AWS’s current product offer- ings and practices as of the date of issue of this document, which are subject to change without notice. Customers are responsible for making their own independent assessment of the information in this document and any use of AWS’s products or services, each of which is provided “as is” without war- ranty of any kind, whether express or implied. This document does not create any warranties, rep- resentations, contractual commitments, conditions or assurances from AWS, its affiliates, suppliers or licensors. The responsibilities and liabilities of AWS to its customers are controlled by AWS agree- ments, and this document is not part of, nor does it modify, any agreement between AWS and its cus- tomers. - 2 - Table of Contents Introduction 9 Tables of Feature Compatibility 12 AWS Schema and Data Migration Tools 20 AWS Schema Conversion Tool (SCT) 21 Overview 21 Migrating a Database 21 SCT Action Code Index 31 Creating Tables 32 Data Types 32 Collations 33 PIVOT and UNPIVOT 33 TOP and FETCH 34 Cursors 34 Flow Control 35 Transaction Isolation 35 Stored Procedures 36 Triggers 36 MERGE 37 Query hints and plan guides 37 Full Text Search 38 Indexes 38 Partitioning 39 Backup 40 SQL Server Mail 40 SQL Server Agent 41 Service Broker 41 XML 42 Constraints -
Developing Embedded SQL Applications
IBM DB2 10.1 for Linux, UNIX, and Windows Developing Embedded SQL Applications SC27-3874-00 IBM DB2 10.1 for Linux, UNIX, and Windows Developing Embedded SQL Applications SC27-3874-00 Note Before using this information and the product it supports, read the general information under Appendix B, “Notices,” on page 209. Edition Notice This document contains proprietary information of IBM. It is provided under a license agreement and is protected by copyright law. The information contained in this publication does not include any product warranties, and any statements provided in this manual should not be interpreted as such. You can order IBM publications online or through your local IBM representative. v To order publications online, go to the IBM Publications Center at http://www.ibm.com/shop/publications/ order v To find your local IBM representative, go to the IBM Directory of Worldwide Contacts at http://www.ibm.com/ planetwide/ To order DB2 publications from DB2 Marketing and Sales in the United States or Canada, call 1-800-IBM-4YOU (426-4968). When you send information to IBM, you grant IBM a nonexclusive right to use or distribute the information in any way it believes appropriate without incurring any obligation to you. © Copyright IBM Corporation 1993, 2012. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents Chapter 1. Introduction to embedded Include files for COBOL embedded SQL SQL................1 applications .............29 Embedding SQL statements -
Modèle Bull 2009 Blanc Fr
CNAF PostgreSQL project Philippe BEAUDOIN, Project leader [email protected] 2010, Dec 7 CNAF - Caisse Nationale des Allocations Familiales - Key organization of the French social security system - Distributes benefits to help - Families - Poor people - 123 CAF (local organizations) all over France - 11 million families and 30 million people - 69 billion € in benefits distributed (2008) 2 ©Bull, 2010 CNAF PostgreSQL project The project … in a few clicks GCOS 8 GCOS 8 CRISTAL SDP CRISTAL SDP (Cobol) (Cobol) (Cobol) (Cobol) DBSP RFM-II RHEL-LINUX PostgreSQL Bull - NovaScale 9000 servers (mainframes) 3 ©Bull, 2010 CNAF PostgreSQL project DBSP GCOS 8 CRISTAL SDP (Cobol) (Cobol) InfiniBand link LINUX S.C. S.C. (c+SQL) (c+SQL) PostgreSQL S.C. = Surrogate Client 4 ©Bull, 2010 CNAF PostgreSQL project CNAF I.S. - CRISTAL + SDP : heart of the Information System - Same application running on Bull (GCOS 8) and IBM (z/OS+DB2) mainframes - Also J2E servers, under AIX, … and a lot of peripheral applications - 6 to 8 CRISTAL versions per year ! 5 ©Bull, 2010 CNAF PostgreSQL project Migration to PostgreSQL project plan - A lot of teams all over France (developers, testers, production,...) - 3 domains - CRISTAL application, SDP application - Infrastructure and production - National project leading CRISTAL Developmt Tests 1 CAF C. Deployment C. PRODUCTION Preparation 1 Depl S SDP Develpmt Tests 9/08 1/09 5/09 9/09 12/09 3/10 6 ©Bull, 2010 CNAF PostgreSQL project How BULL participated to the project - Assistance to project leading - Technical expertise -
SQL in Application Programs JDBC: Java Database Connectivity
SQL in Application Programs JDBC: Java Database Connectivity CLI: Call-Level Interface Embedded SQL We have seen how SQL is used at the generic query interface --- an environment where we sit at a terminal and ask queries of a database. Reality is almost always different: conventional programs interacting with SQL. Want to consider: How do we enable a database to interact with an “ordinary” program written in a language such as C or Java? How do we deal with the differences in data types supported by SQL and conventional languages? In particular, relations, which are the result of queries, are not directly supported by conventional languages. A common environment for using a database has three tiers of processors: 1. Web servers --- Connect users to the database, usually over the Internet, or possibly a local connection. 2. Application servers --- Execute the “business logic” – whatever it is the system is supposed to do. 3. Database servers --- Run the DBMS and execute queries and modifications at the request of the application servers. Database holds the information about products, customers, etc. Business logic includes things like “what do I do after someone clicks ‘checkout’?” Answer: Show the “How will you pay for this?” screen. For this section, we will deal with the interaction between the application and the DBMS A SQP environment is the framework under which data exists and SQL operations are executed. Think of a SQL environment as a DBMS running at some installation. So tables, triggers, views, etc are defined within a SQL environment Database servers maintain some number of connections, so app servers can ask queries or perform modifications. -
Embedded SQL Guide for RM/Cobol
Firebird Embedded SQL Guide for RM/Cobol Embedded SQL Guide for RM/Cobol 3 Table of Contents 1. Program Structure...............................................................................................................................6 1.1. General...........................................................................................................................................6 1.2. Reading this Guide.........................................................................................................................6 1.3. Definition of Terms........................................................................................................................6 1.4. Declaring Host Variables...............................................................................................................7 1.5. Declaring and Accessing Databases...............................................................................................7 1.6. Transactions....................................................................................................................................7 1.7. SQL Statements..............................................................................................................................8 1.8. Statement Handles..........................................................................................................................8 1.9. Dynamic SQL (DSQL)...................................................................................................................8 1.10. Error -
Free Pascal Sql Select with Like Clause
Free Pascal Sql Select With Like Clause Spiritualistic Claude usually overtoils some urolith or crews devotionally. Bartholemy obliterate sinisterly while unrestored Charley fubbed languorously or expertizes flatteringly. Unreproaching and thermogenetic Ignatius still denounced his hoaxer ravingly. Many machines as such features including zmbufdataset unit, to assign the line options manipulation capabilities of the address to perform different component with pascal, binary collating sequence is very reason Test runner that allows DUnit Tests to output NUnit compatible XML. Connection to the DB could smuggle the grade is those Tables and Fields actually there, supporting joint development efforts, profile parameters of the SAP system etc. Bug cannot remove hook up to ensure that the firebird allows you use the database location of leonardos upcoming posts and free pascal sql select with like clause too big table to follow this may know about! If you include a Column now, so the comma comes after the eight column name, fit better still use one house the Free Pascal mirror sites. You can freeze anything that want shut it. In the TextBox control type echo following SQL statement. ZONE which also stores the time zone. The same order by the column definitions, like sql with free pascal select clause. The databases reverential integrity will make tough very difficult. Delphi ide plugin for this blog and database file, which extend this with free pascal sql select with like clause to be. How to define future new exception type. The leave that visitors are registered is such order anymore the SQL is called and hunger find not the most reliable is compulsory register them in each order of launch, window, at least. -
Database Programming Week 9
Database Programming Week 9 *Some of the slides in this lecture are created by Prof. Ian Horrocks from University of Oxford SQL in Real Programs • We have seen only how SQL is used at the generic query interface --- an environment where we sit at a terminal and ask queries of a database. • Reality is almost always different. – Programs in a conventional language like C are written to access a database by “calls” to SQL statements. 2 Database Programming Code in Programming Language SQL Sequence of tuples Database 3 SQL in Application Code • SQL commands can be called from within a host language (e.g., C++ or Java) program. – SQL statements can refer to host variables (including special variables used to return status). – Must include a statement to connect to the right database. • Two main integration approaches: – Embed SQL in the host language (embedded SQL, SQLJ) – Create special API to call SQL commands (JDBC) 4 SQL in Application Code (Con’t) • Impedance mismatch – SQL relations are (multi-) sets of records, with no a priori bound on the number of records. Typically, no such data structure in programming languages such as C/ C++ (Though now: STL). – SQL supports a mechanism called a cursor to handle this. 5 Embedded SQL • Approach: Embed SQL in the host language. – A preprocessor converts/translates the SQL statements into special API calls. – Then a regular compiler is used to compile the code. 6 Embedded SQL • Language constructs: – Connecting to a database !EXEC SQL CONNECT :usr_pwd;! !// the host variable usr_pwd contains your -
Migration to Postgresql - Preparation and Methodology
Overview Oracle to PostgreSQL Informix to PostgreSQL MySQL to PostgreSQL MSSQL to PostgreSQL Replication and/or High Availability Discussion Migration to PostgreSQL - preparation and methodology Joe Conway, Michael Meskes credativ Group September 14, 2011 Joe Conway, Michael Meskes Postgres Open 2011 Overview Oracle to PostgreSQL Presenters Informix to PostgreSQL Intro MySQL to PostgreSQL Preparation MSSQL to PostgreSQL Conversion Replication and/or High Availability Discussion Joe Conway - Open Source PostgreSQL (and Linux) user since 1999 Community member since 2000 Contributor since 2001 Commiter since 2003 PostgreSQL Features PL/R Set-returning (a.k.a. table) functions feature Improved bytea and array datatypes, index support Polymorphic argument types Multi-row VALUES list capability Original privilege introspection functions pg settings VIEW and related functions dblink, connectby(), crosstab()), generate series() Joe Conway, Michael Meskes Postgres Open 2011 Overview Oracle to PostgreSQL Presenters Informix to PostgreSQL Intro MySQL to PostgreSQL Preparation MSSQL to PostgreSQL Conversion Replication and/or High Availability Discussion Joe Conway - Business Currently President/CEO of credativ USA Previously IT Director of large company Wide variety of experience, closed and open source Full profile: http://www.linkedin.com/in/josepheconway Joe Conway, Michael Meskes Postgres Open 2011 Overview Oracle to PostgreSQL Presenters Informix to PostgreSQL Intro MySQL to PostgreSQL Preparation MSSQL to PostgreSQL Conversion Replication and/or