Answer Posted / Awashesh Kumar Tiwari
A foreign key is a field or set of fields in one table that refers to the primary key of another table. It enforces referential integrity by ensuring that relationships between tables are maintained, and it improves data consistency by preventing invalid data from being inserted into the database.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is the current version of postgresql?
Do we need to rebuild index after truncate?
If a cursor is open, how can we find in a pl/sql block?
What is the current version of sql?
What is your daily office routine?
Hi am new to PLSQL & facing problems in writing code like in SP, Functions, so any one having some SP coding with in depth explanation please share with me my Email ID suvarnaatsuvarna@rediffmail.com Or taking tanning on this please do contact me
how to start mysql server? : Sql dba
How do I remove duplicates in two columns?
what are all the common sql function? : Sql dba
what is dbms? : Sql dba
what is sql server agent? : Sql dba
what are the advantages of sql ? : Sql dba
Can delete statement be rollbacked?
how to use regular expression in pattern match conditions? : Sql dba
Can we use distinct and group by together?
