Programming Oracle Triggers and Stored Procedures (3rd by Kevin Owens

By Kevin Owens

Complex Oracle positive aspects comparable to triggers and kept approaches make itpossible to construct databases that contain enterprise ideas - permitting companiesto reengineer techniques extra quick and successfully than ever. this is often the"bible" for an individual designing complicated Oracle databases that incorporatebusiness ideas, and it's absolutely compliant with Oracle 10g. The e-book provides asimple technique which yields a highly-maintainable repository of triggersand saved tactics that are effortless to regulate and adjust because the businesschanges. themes coated comprise: declarative constraints; interpreting constraintsthrough the information dictionary; PL/SQL application devices; embedded SQL; datatypes and composite buildings; errors dealing with and exceptions; andinterprocess communication.A set off is a situation, which if actual, reasons a kept strategy to execute.Stored strategies are SQL code embedded within the database that providescritical info to the top person while prompted.

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Extra info for Programming Oracle Triggers and Stored Procedures (3rd Edition) (Prentice Hall PTR Oracle Series)

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SQL" file line 2 The three options with the SQL*Plus SAVE command are: • SAVE filename • SAVE filename REPLACE • SAVE filename APPEND You execute a SQL script from SQL*Plus with the syntax: @filename. For example: SQL> @students_select STUDENT_ID ---------A101 A102 SQL> STUDENT ------John Mary COLLEGE_MAJOR -------------------Biology Math/Science STATUS -----Degree Degree During development, SQL*Plus scripts are used to drop and recreate all the tables of an application. Also for development, scripts are used to load test data.

Sql The plan table, if you need to key in, is: CREATE TABLE PLAN_TABLE ( 61 62 statement_id VARCHAR2(30), timestamp DATE, remarks VARCHAR2(80), operation VARCHAR2(30), options VARCHAR2(255), object_node VARCHAR2(128), object_owner VARCHAR2(30), object_name VARCHAR2(30), object_instance NUMERIC, object_type VARCHAR2(30), optimizer VARCHAR2(255), search_columns NUMBER, id NUMERIC, parent_id NUMERIC, position NUMERIC, cost NUMERIC, cardinality NUMERIC, bytes NUMERIC, other_tag VARCHAR2(255), partition_start VARCHAR2(255), partition_stop VARCHAR2(255), partition_id NUMERIC, other LONG, distribution VARCHAR2(30), cpu_cost NUMERIC, io_cost NUMERIC, temp_space NUMERIC, access_predicates VARCHAR2(4000), filter_predicates VARCHAR2(4000)); [ Team LiB ] [ Team LiB ] Chapter Three.

When editing with either the CHANGE or APPEND commands, think about the fact that you are editing the contents of the SQL*Plus buffer, which does not include the semicolon. The aforementioned example appended a WHERE clause and we had to begin with a space to detach the text with a space. You can sometimes just leave off a character when typing in which case you simply append characters to the end of a line. The following statement, as first entered, is missing the "S" from the STUDENTS table sometimes we just cannot remember if a table name is singular or plural.

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