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What are the aggregate objects in the data dictionary?
please give me introduction to full data in D B M S in a short assignment
Briefly describe concurrency execution? Lock - based protocols Locks There are several modes in which a data item may be locked in this section we restrict our attention
What is equi join? Equi Join - It generates all the combinations of tuples from two relations which satisfy a join condition along with only equality comparison (=).
What is completeness constraint on generalization? Define the variation between total and partial design constraint. Give an example each. Ans: Completeness Constraints
When a function module is activated syntax checking is performed automatically. YEs, a function module is activated syntax checking.
Multiple column Queries: Syntax: SELECT COLUMN1, COL2,...... FROM TABLE WHERE (COLUMN1, COL2, ...) IN (SELECT COLUMN1, COL2,.... FROM TABLE WHERE );
What is the use of unique function? UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
Attributes and its types explain?
What are the ways in which signal can be generated A signal might be generated in many ways such as a Signal is result of particular physical condition. Whenever a process writ
basic structure of xml
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