Select the correct answerA database that contains tables linked by common fields is called aOptionsCentralized databaseFlat file databaseRelational databaseNone of above

To select the correct answer, we need to understand the options provided:

1. Centralized database: This refers to a database where all the data is stored in a single location or server. It does not necessarily imply that the tables are linked by common fields.

2. Flat file database: This refers to a database where data is stored in a single table or file, without any relationships or links between tables.

3. Relational database: This is the correct answer. A relational database is a database that contains tables linked by common fields. It allows for the establishment of relationships between tables through the use of primary and foreign keys.

4. None of the above: This option indicates that none of the previous options are correct.

Based on the given options, the correct answer is "Relational database."