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List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
What is schema
distributed quey processing
example of bank
Define lock? Lock is the most common used to execute the requirement is to permit a transaction to access a data item only if it is currently holding a lock on that item.
Define single valued and multivalued attributes. Single valued attributes: attributes with a single value for a particular entity are known as single valued attributes. Mult
examples of fields in a database
What is the difference among a database schema and a database state? The collection of information stored in database at particular moment in time is known as database state a
Define instance and schema? Instance: Collection of data stored in the data base at a certain moment is Schema: The overall design of the data base is known as the data base
What are the two types of serializability? The two types of serializability is a) Conflict serializability b) View serializability
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