primary key, Database Management System

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what is primary key

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Describe the composite key, Describe the Composite Key Composite Key: ...

Describe the Composite Key Composite Key: Sometimes one key is not enough to uniquely recognize a row. E.g. in a single class Roll is enough to search a student, but in the w

Client dbms, i need to submit in this topic.

i need to submit in this topic.

Consistency-transaction , Consistency: This property makes sure that a com...

Consistency: This property makes sure that a complete transaction implementation takes a database from one consistent state to another consistent state. If the transaction fails e

Which file organization provides very fast access, Which file organization ...

Which file organization provides very fast access to any arbitrary record of a file? Hashed file organization provides very fast access to any arbitrary record of a file.

Explain the components of database system in details., Explain the compone...

Explain the components of Database System in details.

Tour Operator Agency Database , #A multinational tour operator agency has g...

#A multinational tour operator agency has gained new business growth in the North American market through the use of social media. Its operation has expanded by 50% within six mont

Can a domain, Can a domain, assigned to a data element be changed? Yes....

Can a domain, assigned to a data element be changed? Yes.  We can do so by just overwriting the entry in the field domain.

MYSQL, i have a homework assignment identical to one you have listed

i have a homework assignment identical to one you have listed

Define null value, Define NULL value NULL value NULL means something is...

Define NULL value NULL value NULL means something is unknown. It does NOT mean null (the digit 0). Null is as well employed as attribute value for a particular entity in which

Create an index for the table client, Create an index for the table Client,...

Create an index for the table Client, field CLIENT_NO of Q ? Command:   CREATE INDEX client_client_no ON client(client_no);

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