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What is conceptual model ?
A conceptual model is a independent of both hardware and software.
East Coast Aquarium Relational Database
Extend your CREATE TABLE statement from problem 3 with referential integrity constraints. Updates and deletes on related rows are restricted. 6. From examination of the sample data
Draw an Entity-Relationship model for the relational schema given in the Appendix. Show all the entities, relationships, relationship names, and attributes and also underline the
List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view
Why DML is used for? DML is used to Manipulation and processing of database. DML is provided for manipulation & processing of database. (Data stored in the database is processed
Describe file organisation? A file is organized logically as a sequence of records. These records are mapped onto disk blocks. A) Fixed-Length Records Type deposit=record
The physical location of a record is determined by which mathematical formula that transforms a file key into a record location? The physical location of a record is determined
For the relations R and S given below: R S A B C 1 4 7 2 5 8 3 6 9
The Structured Query Language INTRODUCTION Database is an organised set of information about an entity having controlled redundancy and serves numerous applications. DBMS
compare the features of oracle RDBMS with MySQL and Microsoft SQL server
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