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List the set operations of SQL?
1) Union
2) Intersect operation
3) The except operation
What is schema
Determine the Strong and Weak Entity Based on the method of foreign key, there might be arise a situation when we have to relate an entity having a primary key of its own and a
usecase diagram,activity diagraM,SEQUENCE DIAGRAM
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
need a DBMS system on any data for assignment.
What are the advantages of Logical Databases? It offers a simple-to-use selection screens. You can change the pre-generated selection screen to your needs. It offers check f
What is meant by heuristic optimisation?Discuss the major heuristics that are applied during query optimisation.
Define lock? Lock is the most common used to execute the requirement is to permit a transaction to access a data item only if it is currently holding a lock on that item.
What benefits can a company gain by managing its own information infrastructure and servicea
Which method of access uses key transformation? A Hash method of access uses key transformation.
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