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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.
Lossless-Join Decomposition Let us show an intuitive decomposition of a relation. We require a better basis for deciding decompositions since intuition may not always be r
1. Create the tables for the play-scheme database as specified in the TMA. 2. Enter the data as given in the spreadsheet. 3. Create queries to retrieve specified information
how to write tables and drow E-R diagrams for hosiptal management system and how to normalize and cardinalities?
What are called journaling file systems? File systems that support log disks are known as journaling file systems.
what is lossless & dependency preserving decomposition ?
Explain in details about the f unctions of DBA ?
How nulls are treated in comparison operator? Along with comparison (relational) operators, the null values are ignored as we cannot derive the relation along with the given op
Attribute Preservation This is a easy and obvious necessity that includes preserving all the attributes that were there in the relation that is being decomposed.
A relation has: Relational Schema Relation instance Relational Schema: A relational schema shows the relation's name, its attributes and the domain of every a
Advantages of Database management system Let us summarize the advantages. Reduction of Redundancy: This is perhaps the most important advantage of using DBMS. Redundancy i
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