Database Redesign Typically, there should be at least two different copies of the database schema used in the redesign process. False True False True ANSWER DOWNLOAD EXAMIANS APP
Database Redesign A tool that can help designers understand the dependencies of database structures is a: data model. graphical display. dependency graph. None of these data model. graphical display. dependency graph. None of these ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The use of the double NOT EXISTS can be used to find rows that do not match some specified condition. False True False True ANSWER DOWNLOAD EXAMIANS APP
Database Redesign Which of the following SQL statements are helpful in database redesign? Correlated subqueries only EXISTS/NOT EXISTS expressions only Both of the above are helpful None of these Correlated subqueries only EXISTS/NOT EXISTS expressions only Both of the above are helpful None of these ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The data model that is produced from reverse engineering is: a logical model. a conceptual model. an internal model. None of these a logical model. a conceptual model. an internal model. None of these ANSWER DOWNLOAD EXAMIANS APP
Database Redesign The process of reading a database schema and producing a data model from that schema is known as: None of these reverse engineering. database design. data modeling. None of these reverse engineering. database design. data modeling. ANSWER DOWNLOAD EXAMIANS APP
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