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whta is the advantage of the database management approachthe advantage of the database management approach is data is integrated and can be accessed
which element in the database can modified by changing the data dictionarydata elements in the database can be changed or modified through changing
what count function return in sqlcount function within sql returns the number of values count function counts all the not null values in the exact
what subschema expresses a subschema expresses the external view external schemas are called also called as
what was the method in which records are physically stored in a specified order according to a key field in each record a method in which records are
what does conceptual design worka conceptual design involves modelling independent of the
what is relational model featurea relational model feature is much more data independence than some other database
in which form of relational database developer refers to a recordin a tuple form of relational database developer refers to a
which component of dbms can be embedded in a programthe data manipulation language dml is a component which is embedded in a
what is property - properties of a database it is an integrated collection of logically related records it consolidates separate files into a common
why a report generator is used report generator is used for print files on
in an e-r diagram an entity set is represent byin an e-r digram entity set is represted by
what is the way a particular application views the data from the database that the application usessub schema is the way a particular application
which language has presently become the defacto standard for interfacing application programs along with relational database systemthe language which
which component is not included in database environment a users component is not included in database
related fields in a database are grouped in which formrelated data fields in a database are grouped to form a data record a record is a collection of
which language used in application programs to request data from the dbms is referredlanguage which is used in application program is dml to request
in tuple relational calculus p1rarr p2 is equivalent to a in tuple relational calculus p1rarr p2 is equivalent to notp1 v p2 the logical implication
in case of entity integrity the primary key may be declaredin a case of entity integrity primary key may be not
in an e-r diagram how attributes are represented in an e-r diagram attributes are represented in a
in a hierarchical model of data records are organized in the hierarchical model of data records are organized as tree
an entity set that does not have sufficient attributes to form a primary key is calledan entity set that doesnt have sufficient attribute to form a
in the architecture of a database system which external level usedin the architecture of a database system view external level
in which format database schema is written data base schema is written in the ddl
in a relational model how relations are termedin a relational model relations are termed as tables the term lsquorelationrsquo is the technical name