Quick review of SQL And conversion to Oracle SQL

Assuming… You know how to model data using –An ER diagram –A class diagram You know how to translate entity- relationship models into: –Tables –With constraints

SQL Structured Query Language Made up of the following components: –Data Manipulation Language (DML) –Data Definition Language (DDL) –Transaction control –Data Control Language (DCL) Oracle SQL complies with the core ANSI/ISO standard for SQL:2003, but is not completely compliant. It also has extensions, that are not compliant, so are not portable to non-Oracle databases.

DML SELECT INSERT UPDATE DELETE

DDL CREATE ALTER DROP –Any object in the database. TRUNCATE –Deletes all rows in a table.

Transaction control A database transaction is a unit of work that leaves the database in a consistent state. To ensure consistency, ongoing work can be committed, rolled back to a checkpoint, or rolled back completely. COMMIT ROLLBACK

Data Control Language These control user access to an Oracle database. These instructions include: –GRANT –REVOKE –SET ROLE…

Exercises Lab 1, Week 1 Learn the datatypes that are used in Oracle 10g. Retrieve all columns and rows Retrieve specific columns Use SQL*Plus DESCRIBE command Specify an alias for a column Learn the SQL built-in functions provided by Oracle. Learn about the DUAL table. Build SELECT clause expressions –with the Concatenation String operator –with arithmetic operators –with SQL built-in functions. Work with NULLs in a SELECT clause expression Implement conditional log in SELECT clause expressions. Retrieve specific rows from tables.

Exercises Lab 2, Week 1 Building WHERE clause conditions –with relational operators –With subqueries Building composite WHERE Clause conditions with logical operators Grouping records in a query’s result set. Rolling up groups into supergroups. Ordering records in a query’s result set Building an inner join of two tables Building an outer join of two tables. Inserting new rows in a table Deleting rows from a table.

Lab 1 Week 2 Committing and Rolling back transactions Writing and storing scripts.

Lab 2 Week 2 Data Definition Language DCL

References ‘Hands-on Oracle Database 10g Express Edition for Windows’, Bobrowski, S., Oracle Press, McGraw Hill / Osborne, ‘Oracle Database 10g A Beginner’s guide’, Abramson, I., Abbey, M., Corey, M., Oracle Press, McGraw Hill / Osborne, 2004.