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What is transaction?
Transaction is a unit of program implementation that accesses and possibly updated several data items.
Explain entity integrity and referential integrity rules within relational model. Show how these are realized in SQL? Entity Integrity Rule - No primary key value could be nu
Shared lock or Read Lock It is requested by a transaction that needs to just read the value of data item. A shared lock on a data item does not permit an exclusive lock
Class Diagram A class diagram is required to support functional necessity of system. In a static design view, class diagram is used to model vocabulary of the system, simple c
What is recovery management component? Ensuring durability is the responsibility of a software component of the base system known as the recovery management component.
Explain the paths in the association network We can analyze use of paths in the association network as given below: Calculate each operation Find associations whic
Importance Of File Organisation In Database To execute a database efficiently, there are various design tradeoffs needed. One of the most vital ones is the file Organisation. F
What does Aggregation mean?
define attribute inheritance with example?
Describe the storage structure of indexed sequential files and their access method. Ans: Storage structure of Indexed Sequential files and their access: To achieve fast rand
Define tuple variable Tuple variable is a type of variable whose domain is the set of all tuples.
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