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What are the two statements regarding transaction?
The two statements regarding transaction of the form are:-
A) Begin transaction
B) End transaction
explain the mapping constraints
Example : Search the name, department number and salary of employees drawing minimum salary in that department. SELECT ENAME, SAL, DEPTNO FROM EMP WHERE SAL IN (SELECT MI
What are the aggregate objects in the data dictionary? Views Match codes Lock objects.
what is cascading rollback
What are the uses of the information in the Data dictionary? The following information is directly taken from the Data dictionary: Information on fields displayed with
case study
Example - ALTER TABLE emp MODIFY (empno NUMBER (7));
distributed quey processing
What is called an evaluation primitive? A relational algebra operation annotated with instructions on how to evaluate is known as an evaluation primitive.
ER diagram on cosmetics
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