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Write short notes on transaction state?
A transaction may not always complete its implementation successfully such a transaction is termed aborted
A transaction must be in one of the following states
Active
Partially committed
Failed
Aborted
Committed
What is the use of keyword ISA? The use of keyword ISA is to show that a class is a specialization of another class.
What is the error handling Traditionally, bits have been sent over line lacking any error correcting scheme in physical layer. The presence of the CPU in each modem makes it po
List the set operations of SQL? 1) Union 2) Intersect operation 3) The except operation
What is the role of a database administrator?
List the drawbacks of relational database system A) Repetition of data B) Inability to s certain information.
A student entity type has the following attributes,name..
Types of Locks There are two necessary types of locks: Binary lock : This locking mechanism has two states for to a data item: locked or unlocked Multiple-mode loc
Define value set? Value set: It is a set of values. You do not always need a user to enter junk free text within all the fields. Therefore, Oracle Apps uses value set to valida
Define database management system? Database management system (DBMS) is a set of interrelated data and a combination of programs to access those data.
Describe the advantage of State chart Diagram A state chart represents a state machine, emphasizing flow of control from one state to other. A state machine is a behaviour whi
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