Answer Posted / ravin
Unique constraint and unique index are different things but
their goals might be similar.
Unique index is created implicitly with the creation of
Primary key and unique key both.
Hence no primary key can be created without a unique index.
| Is This Answer Correct ? | 19 Yes | 0 No |
Post New Answer View All Answers
What is full join in sql?
How to use sql*plus built-in timers?
Does sql*plus have a pl/sql engine?
what is a join? : Sql dba
What does data normalization mean?
Is join same as left join?
how to rename an existing table in mysql? : Sql dba
What is the maximum number of rows in sql table?
What do you mean by table in sql?
How do you add a column to a table?
What is $$ in sql?
What is rowid in sql?
Can we insert in view in sql?
How can I get the number of records affected by a stored procedure?
Show the two pl/sql cursor exceptions.