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What is the difference between the function module and a normal ABAP/4 subroutine?In contrast to normal subroutines function modules have uniquely exact interface. Declaring data as common parts is not possible for function modules. Function modules are kept in a central library
entity relationship diagram for online examination system
it can be possible to create any table without primary key
Identification of concurrency Identification of concurrency: Dynamic model identifies concurrency. Two objects are said to be parallel (concurrent) if they can receive events a
Improved Reliability: In a centralised DBMS, a server failure stops the operations of the DBMS. Though, a failure at single site of a DDBMS, or a failure of a communication link cr
Equi Join: A join in which the joining condition is based on equality among values in the common columns. Common columns show (redundantly) in the result table. Let us Consider th
What is the full form of ODBC ? ODBC stands for Open Database Connectivity.
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.
Why does a DBMS query language is designed? A DBMS query language is designed to support end users who use English-like commands. support in the development of complex applicat
What is the use of Union and intersection operation? Union: The result of this operation contains all tuples that are either in r1 or in r2 or in both r1 and r2.Duplicate tuple
What is RDBMS terminology for a row? A tuple is a RDBMS terminology for a row
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