What is database link

patilneha602
Posts: 31
Joined: Sat Oct 08, 2016 4:03 pm

What is database link

Postby patilneha602 » Sat Oct 08, 2016 5:37 pm

What is database link

arvind2384K
Posts: 39
Joined: Sat Oct 08, 2016 4:04 pm

Re: What is database link

Postby arvind2384K » Sat Oct 08, 2016 5:37 pm

A database link is a pointer in the local database that allows you to access on a remote database.

When can hash cluster used

Hash clusters are useful in cases where :
(i) There is a uniform, even and predictable no. of key values.
(ii) Queries using equality predicates.
(iii) The table is NOT growing constantly, and the keys are rarely updated.


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