Introduction to Database System A data dictionary is a special file that contains the names of all fields in all files the widths of all fields in all files the data types of all fields in all files All of these None of these the names of all fields in all files the widths of all fields in all files the data types of all fields in all files All of these None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System After you _____ a record, many data management the environments require you to issue a command to save the changes you made. Update Delete Sort key Index Update Delete Sort key Index ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Sort/report generators none of the listed here do not need to sort before generating a report are faster than index/report generators require more disk space than index/report generators none of the listed here do not need to sort before generating a report are faster than index/report generators require more disk space than index/report generators ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier? Weak entity ID- independent entity ID-dependent entity Strong entity Weak entity ID- independent entity ID-dependent entity Strong entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System When the values in one or more attributes being used as a foreign key must exist in another set of one or more attributes in another table, we have created a(n): normal form. insertion anomaly. referential integrity constraint. transitive dependency. normal form. insertion anomaly. referential integrity constraint. transitive dependency. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A database design may be based on existing data. False True False True ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS