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Explain the Difference between DROP and DELETE
DELETE deletes one or more than one tuples of a particular relation from the database. DROP is employed to remove a table from the schema. While DROP removes the definition of the relation also the data in the given relation, delete only deletes the tuples but keeps the table definition.
What is a recovery scheme? An integral part of a database system is a recovery scheme that can restore the database to the reliable state that existed before the failure.
Creation of Indexes Automatically: When a primary key or Unique constraint is show in a table definition then a unique index is formed automatically. Manually: User can
Explain the utilities which help the DBA to manage the database? Every DBA uses database utilities to maintain and control their databases. But there is a lot of confusion wit
Explain nested relations? Nested relations The assumption of INF is a natural one in the bank examples we have considered. However, not all applications are best modelled
Explain the concept of Modeling With Objects A model is a conceptual representation of a specification, design or system from a particular point of view. A modelling language
For the question given below, you are required to submit design and implementation documentation as described over the page. Design, implement (in Java), test and document a set of
Question: AirwaysCentre, an international airline booking company currently uses a relational database system for their operations, which includes the following relations: P
For Colorado customers calculate the number of single products ordered. If a product is purchased on multiple orders, it should be counted only single time. The result should conta
Define multivalued dependency and 4NF. Ans: Multivalued Dependency - Assume R be a relation schema and let α ⊆ R and β ⊆ R. The multivalued dependency α →→β holds o
What is storage manager? A storage manager is a program module that gives the interface among the low level data keeps in a database and the application programs and queries su
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