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Object-based Models: Use objects as key data representation components . Examples:- Entity-Relationship Model: It is a collection of real world objects known as entitie
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
How to create values of structured type? Constructor functions are used to make values of structured types. A function with the similar name as a structured type is a construct
deffine class&object
Normal 0 false false false EN-US X-NONE X-NONE
What are aggregate functions? And list the aggregate functions supported by SQL? Aggregate functions are functions that take a collection of values as input and return a one va
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
Sequences Sequences: Automatically produce unique numbers Are sharable Are typically used to make a primary key value Replace application code Speed up t
Consider the relations EMP(ENO,ENAME,AGE,BASIC_SALARY) WORK_IN(ENO,DNO) DEPT(DNO,DNAME,CITY) Express the following queries in SQL (i) Find names of employees who work in a dep
give some example real-life situations where DBMS are most suiitabe
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