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Write short notes on relational model The relational model uses a collection of tables to show both data and the relationships between those data. The relational model is an ex
What is the used of specifying alias? Specifying alias: is used to rename column or attribute in a table.
Hot Backup: Some sites cannot terminate the database while creating a backup copy of the files. The cold backup is not a reliable option. So different kinds of backing up database
What are the failures of Controlling Events Between Objects Failure Unintentional termination of system. Several possible causes: failure of system hardware, o
Answer SQL Queries to extract data from data tables and questions on mapping conceptual data models into relational data model.
What is Information System?
Preliminary entities and attributes of human resourse management database management system
Describe the algorithm to draw the dependency graph? Ans: Algorithm to draw Precedence Graph is like this: a. For every transaction T i participating in schedule S, make
What benefits can a company gain by managing its own information infrastructure and servicea
What are the purpose for having variable length records? What kinds of separator characters are required for each? Variable-Length Records - Variable-length records are thos
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