a) users b) separate files c) database d) database administrator Answer: a
View QuestionRelated fields in a database are grouped to form a
a) data file b) data record c) menu d) bank Answer: b
View QuestionA logical schema
a) is the entire database. b) is a standard way of organizing information into accessible parts c) describes how ...
View QuestionThe language used in application programs to request data from the DBMS is referred to as the
a) DML b) DDL c) VDL d) SDL Answer: a
View QuestionNULL is
a) the same as 0 for integer b) the same as blank for character c) the same as 0 ...
View QuestionIn case of entity integrity, the primary key may be
a) not Null b) Null c) both Null & not Null d) any value Answer: a
View QuestionIn an E-R diagram attributes are represented by
a) rectangle b) square c) ellipse d) triangle Answer: c
View QuestionIn a Hierarchical model records are organized as
a) Graph b) List c) Links d) Tree Answer: d
View QuestionAn entity set that does not have sufficient attributes to form a primary key is a
a) strong entity set b) weak entity set c) simple entity set d) primary entity set Answer: b
View QuestionIn the architecture of a database system external level is the
a) physical level b) logical level c) conceptual level d) view level Answer: d
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