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Write the syntax of creating an INDEX ? Syntax of Creating an Index: CREATE [BITMAP] [UNIQUE] INDEX ON ( [, ] . . .);
Define query optimization. Query optimization refers to the process of search the lowest -cost method of evaluating a given query.
Define Atom of domain relational calculus An atom has the outline 1 , x 2 , ... , x n > -> r , in which r stands for a relation on n attributes and x 1 , x 2 , ... , x n ar
What are the advantages of DBMS ? 1. Centralized Management and Control - One of the major advantages of using a database system is in which the organization could exert, thr
Scenario 1: Power goes out after the first instruction. What happens?
State the definition of association An association is a structural relationship which specifies that objects of one thing are connected with objects of another. In UML, asso
Implementation of association as an object Implement as a separate association object, independent of either class, as in Figure. An association object is a group of pairs
What are the advantages of creating a table from existing table?
List some instances of collection types? a) sets b) arrays c) multisets
Define various ways in which SELECT statement can be used for record selection Technology? SELECT gives you control over a number of aspects for record retrieval: 1) Which
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