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Question 1. Compare SQL and PL/SQL
Question 2. Write a database trigger to implement the following check condition
Given the following table
Empno Empname Joining Date
Every time the user enters the employee number in the above table, it should check that it is always >1 and <200
Question 3. Differentiate between shared pool and large pool of Oracle memory component
Question 4. Write about the following Oracle 9i objects
Question 5. Write a query using oracle SQL to compute the number of months between September 29,1999 and August 17, 2003
Question 6. Write a select statement in oracle SQL that returns each instructors last name followed by a comma and a space, followed by instructor's first name all in single column in the result set
%ROWCOUNT When its cursor or cursor variable is opened, the %ROWCOUNT is zeroed. Before the first fetch, the %ROWCOUNT yields 0. Afterward, it yields the number of rows fetche
Cursor Variables As Parameters You can declare the cursor variables as the formal parameters of the functions and procedures. In the illustration below, you define the REF CUR
Example of NOT EXISTS in SQL Example: Use of NOT EXISTS CREATE ASSERTION Must_be_enrolled_to_take_exam_alternative1 CHECK ( NOT EXISTS (SELECT StudentId, CourseId
Natural Join - SQL In the absence of NATURAL JOIN Example has to be replaced by something rather more longwinded, as shown in Example. Example: Joining IS_CALLED and IS_EN
Existential Quantification - SQL Existential quantification-stating that something is true of at least one object under consideration-can be expressed by OR(r,c), meaning tha
i NEED TO CREATE 3 guiS IN pl/sql sERVER PAGE FORM
Manipulating Collections Within PL/SQL, the collections add procedural power and flexibility. The biggest benefit is that your program can compute subscripts to process the spec
Processing Transactions This part describes how to do the transaction processing. You learn the fundamental techniques that safeguard the consistency of your database, involvin
set serveroutput on declare a number(5); b number(5); c number(5); begin a:=&a; b:=&b; c:=a/b; dbms_output.put_line(c); exception when zero_d
Table Literals - SQL One might expect SQL to support table literals in the manner illustrated in Example 2.2, but in fact that is not a legal SQL expression. Example: Not a
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