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What is Normalization?
Database normalization is a data design and organization method applied to data structures based on rules that help building relational databases. In relational database design, the method of organizing data to minimize redundancy is known as normalization. Normalization usually includes dividing a database into two or more tables and defining relationships among the tables. The objective is to isolate data so that additions, deletions, and modifications of a field can be made in just one table and then propagated by the rest of the database via the explained relationships.
Table Handling In RDBMS more than one table can be tackled at a time by using join operation. Join operation is a relational operation that causes 2 tables with a common domai
Association as a cache This association must be updated when any new element is added to it, but testing for overlap using association is more efficient. Figure:
List the set operations of SQL? 1) Union 2) Intersect operation 3) The except operation
What is conceptual schema? The schemas at the view level are known as subschema that describe dissimilar views of the database.
Define a relation ? Relation - A relations is a named two-dimensional table of data. Mathematically, a relation can be described as a subset of the cartesian product of a lis
East Coast Aquarium Relational Database
Concurrency issues Data integrity: Threads accessing same object need to be synchronized, such as: banking account. Deadlock: One or more threads in system are perman
what is multivalued dependency
Problem 1. Create a PL/SQL program to insert data into student table and display the details of the student having Reg.No 1010 Writing a PL/SQL program to Insert data
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
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