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What is trigger
Triggers are statements that are implemented automatically by the system as the side effect of a change to the database.
What is Cross Product? Simply Cross product is Binary Operator
Consider a systems development project with the following data Activity Duration (weeks) Precedence Relationship 1. Software design
What is data definition language? Explain it in detail? The SQL DDL allows specification of not only a set of relations, but also information after each relation, containing
We will explain here an example database application having COLLEGE database and use it in showing several E-R modelling concepts. College database remains track of faculty, Stu
triggering
brief history,definition,current trends and future trends if any of data fragmentation
To eliminate duplicate rows (distinct operator) Example: SELECT DISTINCT DEPTNO FROM EMP;
In order to keep pace with competitors, Space Ltd has decided to implement an ERP system in order to replace its old legacy and manual systems. Management does not have much knowle
cardnality ratio for humanresource mangement system
#question.what is mapping constraints and types?.
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