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Objectives
After reading this unit you should be able to:
Which two files are used during operation of the DBMS? Data dictionary and transaction log are two files used during operation of the DBMS.
assume we have the following apllicationthat model sccer team the games they play and the players inv each teamin the design we want to capture
What is OLTP (Online Transaction Processing)? In OLTP - online transaction processing systems relational database design use the discipline of data modeling and generally follo
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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
what should be included in this???
Data Fragmentation "Fragmentation includes decomposing the data in relation to non-overlapping component relations". Why do we require fragmenting a relation?
The Maximum no of key fields that can be used in a header is?? 50
Which operator is Cartesian product in relational algebra? Cartesian product in relational algebra is a binary operator. (It requires two operands. e.g., P X Q)
One-way Associations If an association is only traversed in single direction, then it is known as one-way association. It is implemented as a pointer or an attribute which con
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