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What is entity in DBMS? Entity: A DBMS entity is either a thing in the modelled world or a drawing element in an ERD.
What is Primary key? Primary Key - Primary key is one of the candidate keys which uniquely identifies each row in the relation.
Can a filed occur in several field groups. Yes. But it leads to redundant data redundancy.
Explain the cartesian product in Database Management System
Sequences Sequences: Automatically produce unique numbers Are sharable Are typically used to make a primary key value Replace application code Speed up t
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
Ask question #MinimThe Georgia Tech Library (GTL) has approximately 16,000 members, 100,000 titles, and 250,000 volumes (an average of 2.5 copies per book). About 10 percent of the
what is Storage-Device Hierarchy question
I need help with data warehousing and business intelligence course project about designing a data warehouse for a jewelry company that does not have one
The need for three level architecture The aim of the three level architecture is to divide each user's view of the database from the way the database is physically shown.
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