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After going by the database architecture, let us now dwell on an important query: how is the data organised in a database? There are a lot of basic structures that exist in a database system. They are known as the database models. A database model defines
What function divides one numeric expression by another and returns the remainder? MOD function divides one numeric expression by another and returns the remainder.
What functions does a data dictionary perform? In a (DBMS)data management system, the principal functions performed by the data dictionary are Management of data defini
A model in database system mostly defines the organisation of data or structure and a set of operations on that data. Relational model is a easy model in which database is represen
Explain the term- Query. Queries are used to repossess and show specific records in a table. They can also be used to show specific fields of specific records, which meet the co
What is the full form of DDL? DDL is stand for Data Definition Language.
explain the mapping constraints
what is cascading? what is rollback cascading? please explain in detail
What is vertical fragmentation? Vertical fragmentation divides the relation by decomposing the scheme R of relation r.
Need a sample of a clinic database relationships
Multi-Key File Organisation In this part, we will introduce two basic file Organisation schemes that permit records to be accessed by more than one key field, therefore, allowi
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