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What is nested relational model?
The nested relational model is an extension of relational model in which domains might be either atomic or relation valued.
what is inverted and multilist structure
Explain sorted File with advantages? Sorted file The sort utility shall perform one of the subsequent functions: 1.Sort lines of all the named files together and write the
What are the DBMS languages? Briefly explain? Data Definition language (DDL):A database schema is specified through a set of definitions expressed through a special language
1. Determine that the Checkpoints are a part of Ans: Checkpoints are a part of Recovery measures
Relational Model: The relational model uses a collection of tables to represent both data and the relationships among those data. Each table has multiple columns and each column h
Self-Join: In a self join a table is joined with itself. Let consider the following sample partial data of EMP table EMPNO ENAME MGRID
What are metrics for choosing the best algorithm? Matrices for choosing the best algorithms are as below: Computational complexity Ease of understand ability and im
What is B-Tree? A B-tree eliminates the redundant storage of search-key values .It permits search key values to appear only once.
Create an entity relationship diagram, Database Management System
Explain the three data models namely relational, network and hierarchical and evaluate their relative advantages and disadvantages. Hierarchical Model: In hierarchical model, da
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