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Discuss how the bi-directional Implementations are made.
In bi-directional implementation of the association, a pair of references must implement every link. The declarations and code essential to support such implementations are same as required in unidirectional implementation. The single difference is that suitable fields have to be declared in both the classes participating in an association.
define locking in simple language and decribed it
State about the Tables- DBMS Data is stored in columns and rows (much like a spreadsheet -main difference is how data is organised). Every row in a table is known as a record
Complexity : A distributed DBMS that is available, reliable, and secure is inherently more difficult than a centralised DBMS. Though, adequate data replication is essential to have
Key to represent relationship amongs tables is called ? A Key that represent the relationship between tables is called Foreign Key.
PHYSICAL DBMS ARCHITECTURE The physical architecture defines the software components used to process and enter data, and how these software components are related and interc
What is a hashing function? What are the properties of a good hashing function? Describe the folding technique for hashing functions. Ans: Hashing function is a method
What is data model? Explain object based and record based data models? Ans: A data model is an abstract model in which describes how data is represented and accessed. (i)
triggering
explain cascading rollback
Information about a bank is about customers and their account. Customer has a name, address that consists of house number, area and city, and one or more phone numbers. Account ha
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