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Can a filed occur in several field groups. Yes. But it leads to redundant data redundancy.
What is Distributed system ? Distributed System - A distributed system consists of a number of processing parts in which are interconnected through a computer network and in
When It is better to use files than a DBMS? It is better to use files than a DBMS when Multiple users wish to access the data.
Q. Describe how an ER schema can be represented by relation schemas and constraints arising from ER design can be mapped to constraints on a relation schema. The entity rela
Query Processor The query language processor is responsible for taking query language statements or shifting them from the English-like syntax of the query language to a form
Find the names of all Albums that have more than 30 tracks. Result: (name: varchar(255))
Nested Queries Let us see some more complex queries in this section. Sub-queries: Some of the basic concerns of sub-queries are: A sub-query is a SELECT statemen
A distributed database is defined as "a collection of multiple logically interrelated database which are physically distributed over a computer network" (a) Give any three advan
Explain the terms primary key, candidate key, alternate key and secondary key. In the given table identify every key? STUDENT(SID,Regno, Name, City) Primary Key: The prim
The database files accept the actual data and are typically the biggest in size. Depending on their shape, the tables for all the user operation can go in one database file-but
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