Physical Database Design An extent is a contiguous section of disk storage space. False True False True ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Data-volume and frequency-of-use statistics are not critical inputs to the physical database design process. False True False True ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design If a denormalization situation exists with a one-to-one binary relationship, which of the following is true? All fields are stored in four relations. All fields are stored in one relation. All fields are stored in two relations. All fields are stored in three relations. All fields are stored in four relations. All fields are stored in one relation. All fields are stored in two relations. All fields are stored in three relations. ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design A rule of thumb for choosing indexes for a relational database includes which of the following? Be careful indexing attributes that have null values. Do not specify a unique index for the primary key of each table. Indexes are more useful for columns that do not appear frequently in the WHERE clause in queries. Indexes are more useful on smaller tables. Be careful indexing attributes that have null values. Do not specify a unique index for the primary key of each table. Indexes are more useful for columns that do not appear frequently in the WHERE clause in queries. Indexes are more useful on smaller tables. ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design A multidimensional database model is used most often in which of the following models? Data warehouse Hierarchical Relational Network Data warehouse Hierarchical Relational Network ANSWER DOWNLOAD EXAMIANS APP
Physical Database Design Which of the following are integrity controls that a DBMS may support? Limit the use of null values in some fields. Limit the set of permissible values that a field may assume. All of these Assume a default value in a field unless a user enters a value for that field. Limit the use of null values in some fields. Limit the set of permissible values that a field may assume. All of these Assume a default value in a field unless a user enters a value for that field. ANSWER DOWNLOAD EXAMIANS APP
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