What is Database Index?

[StuartSpindlow]

Hello Friends,

Please tell me What is database index.

 

[manogua]

A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage space to maintain the index data structure.

 

[edwina]

Nice information.

 

[harish9]

A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage space to maintain the index data structure. Indexes are used to quickly locate data without having to search every row in a database table every time a database table is accessed. Indexes can be created using one or more columns of a database table, providing the basis for both rapid random lookups and efficient access of ordered records.

 

[MyBae]

A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage space to maintain the index data structure.

 

[siriinnovations4]

In my view it is a data structure that improves the speed of data related operations present in a database table to maintain the index data structure at the time of adding extra writes and storage space.

 

[min]

A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage space to maintain the index data structure. Indexes are used to quickly locate data without having to search every row in a database table every time a database table is accessed. Indices can be created using one or more columns of a database table, providing the basis for both rapid random lookups and efficient access of ordered records.