COMPUTER APPLICATIONS True-False :

False If we create multiple primary keys in a table, then primary key will be unable to find the unique key value.

False If a piece of data is stored in two places in the database, then storage space is wasted and changing the data in one spot will cause data inconsistency.

False No, database does not have a limit on number of tables. It depends on the disk space.

True When a table’s primary key field is added to a related table in order to create the common field which relates two tables, it is called a foreign key in the related table.

False The primary key of table is used to uniquely identify each and every row in the table. So, its all keys and columns must be defined as NOT NULL.

False Primary key has to identify a unique value which can be present in a table, in a number form also. It means, primary key field allow number too.

False A primary key is a key which identifies records uniquely in a table so it does not give us permission to record duplicate entry.

True When you want to print those records which are fetched from your database then, reports are more useful for this purpose.

True It is the individual sub-component of one record. It contains set of characters, which have a proper meaning.

False A relationship is a connection between two tables of data.

False A database is the collection of integrated and logically related data.