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difference between internal schema and external schema in DBMS
draw er diagram using entities crop,employee,department,plot,cultivation plan,machinery,seed,fertilizer
cardnality ratio for humanresource mangement system
What is D command work in the respect of QBE? D: It is the command inside QBE to delete tuple(s) from the relation.
In the architecture of a database system which external level used? In the architecture of a database system view external level used.
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why are older data models are being replaced by new data models
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
What is the need of a log in a DBMS? Briefly describe the various types of records that are normally present in a log. Ans: The system log, which is generally writt
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