Tick the correct definition of 'Records'?

Is how data is stored within a database.

One piece of data or information about a person or a thing.

It makes sure that the relationship between two tables. eg. is synchronized for updating and deletion.

All records in a database should have something unique to be identified by.

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1Tick the two types of keys?
1. AA car key
2. BA foreign key
3. CA door key
4. DA primary Key
2Is Productivity, a real world thing that about which information needs to be stored and maintained?
1. AVerdadero
2. BFalso
3Tick the correct definition of 'Records'?
1. AOne piece of data or information about a person or a thing.
2. BIt makes sure that the relationship between two tables. eg. is synchronized for updating and deletion.
3. CIs how data is stored within a database.
4. DAll records in a database should have something unique to be identified by.