Introduction to Database System A key is a group of one or more attributes that uniquely identifies a row. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In the relational model, relationships between relations or tables are created by using: candidate keys. foreign keys. determinants. composite keys. candidate keys. foreign keys. determinants. composite keys. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In order to use a record management system You need to understand the model the record management system uses. Both (a) and (b) None of these All of these You need to understand the low-level details of how information in stored You need to understand the model the record management system uses. Both (a) and (b) None of these All of these You need to understand the low-level details of how information in stored ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The term _____ is sometimes used to refer to a data file in which all the records have the same record format, that is, the same field names, field lengths, and data types. None of these Data structure Table Database Flat file None of these Data structure Table Database Flat file ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Entities use identifiers while tables use keys. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity represents an actual occurrence of an associated generalized entity? Supertype entity Subtype entity Archetype entity Instance entity Supertype entity Subtype entity Archetype entity Instance entity ANSWER DOWNLOAD EXAMIANS APP
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