What is the purpose of a secondary database?

What is a secondary database?

A database that provides an alternative set of keys to access that data is called a secondary database. In a secondary database, the keys are your alternative (or secondary) index, and the data corresponds to a primary record's key.

What is the purpose of secondary key in database?

A primary key is the field in a database that is the primary key used to uniquely identify a record in a database. A secondary key is an additional key, or alternate key, which can be use in addition to the primary key to locate specific data.

Why do we need secondary database in bioinformatics?

Secondary databases comprise data derived from analysing entries in primary databases. In most cases, they also provide tools to investigate further the genes and proteins.

What is difference between primary and secondary database?

1. Primary data is the first data collected by a researcher for the first time. Whereas secondary data is a data that is already collected by someone earlier.