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Selecting Objects:
Suppose that you have run the SQL*Plus script below that creates object type Person and object table persons, and that you have settled the table:
CREATE TYPE Person AS OBJECT (
first_name VARCHAR2(15),
last_name VARCHAR2(15),
birthday DATE,
home_address Address,
phone_number VARCHAR2(15))
/
CREATE TABLE persons OF Person
The sub query below produces a result set of the rows containing only the attributes of the Person objects:
BEGIN
INSERT INTO employees -- another object table of type Person
SELECT * FROM persons p WHERE p.last_name LIKE '%Smith';
Creating a Table Syantax: CREATE TABLE ENROLMENT (StudentId SID, Name VARCHAR (30) NOT NULL, CourseId CID, PRIMARY KEY (StudentId, CourseId)) ; Explan
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Example of Check Constraints Example: Workaround for when subqueries not permitted in CHECK constraints CREATE FUNCTION NO_MORE_THAN_20000_ENROLMENTS ( ) RETURNS BOOLEAN
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Need Database Development with Analysis Tools Project Description: I want a database for large governmental and private data sets on one country that can be simply extended t
Scoping Within the similar scope, all the declared identifiers should be unique. So, even if their datatypes differ, the variables and parameters cannot share the similar name.
Entering and Exiting If you enter the executable part of an autonomous routine, the major transaction suspends. When you exit the routine, the major transaction resumes. To ex
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