Top 10 tips to create indexes on database

 1:- On which column we need to create index

2 :- Index depends on workload then on column

3:- For example if DEPTNO and DEPTNAME  is available then index need to be created on deptno and deptname

4:- Index to avoid sorting (group by and order by), to improve sorting ,which can improve performance

5 :- Create index for uniqueness

6 :- Create index for foreign key

7:- Be aware of modification on applications



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