CSC309 Pointbase Tutorial

CSC309 Pointbase Tutorial

CSC 309 Pointbase Tutorial Timothy Fowler (based on slides by Nan Niu) http://www.cdf.toronto.edu/~radu/csc309/guide/pointbase.html July 2, 2008 Overview What is PointBase and how does it fit into the rest of the Java framework? A few simple examples Questions 2 What is PointBase? PointBase is an RDBMS ± An RDBMS is a relational database management system ± Other RDBMSs include MySQL and the Oracle RDBMS Pointbase fully supports JDBC 1.x API, and adheres to ANSI and ISO standards 3 How does PointBase fit in? · Java classes will use the java.sql.* to interact with PointBase · JDBC is a standard database interface that conveys commands to PointBase behind the scenes 4 PointBase Commander and Console PointBase allows users to interact with databases manually in two ways: ± CLI: PointBase Commander ± GUI: PointBase Console Create a pointbase.ini file for configuring your database Begin with the sample ini file available from the course website database.home = HOME_DIRECTORY/csc309/pointbase/ 5 Creating a database Start one of the database management tools ± setenv CLASSPATH “.:/h/u2/csc309h/lib/pointbase/pbembedded41ev.jar:/h/u2/ csc309h/lib/pointbase/pbtools41ev.jar” ± java com.pointbase.tools.toolsConsole ± java com.pointbase.tools.toolsCommander Create a sample database ± select * from systables; ± create table student (id integer, name character (40), birthday date); ± insert into student values (1, 'John', date '1980-1-1'); 6 Commit and Autocommit After making changes to a PointBase database, these changes must be committed ± This can be done using the “commit;” command ± This can also be done by turning on autocommit by executing “set autocommit on;” · By default: Commander has autocommit off Console has autocommit on 7 Simple Examples DBTest – Demonstrates a simple way to check that the DB is working. Program prints the names of all tables in the DB. DBTable – Demonstrates how to add/delete tables and how to insert/query data. DBInteractive – Interactive program that demonstrates how to add/delete tables and how to insert/query data. 8 Things to note A lock file is used to stop concurrent modification ± If you have problems starting Commander after a crash, try deleting “.lck” file Quotation marks (e.g., “, \”, ‘, etc.) when handling character/string type fields Remember to “commit;” or turn on autocommit Remember to close SQL statement and DB connection at the end Remember to set your CLASSPATH If you don't know where to start, begin with the 3 demo files from the course website 9.

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