question archive (a) What is the difference between projecting and joining? (b) How can a data dictionary be useful to database administrators and DBMS software engineers? (c) What is data modeling? What is its purpose? Briefly describe three commonly used data models
(a) What is the difference between projecting and joining? (b) How can a data dictionary be useful to database administrators and DBMS software engineers? (c) What is data modeling? What is its purpose? Briefly describe three commonly used data models
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(a) What is the difference between projecting and joining? (b) How can a data dictionary be useful to database administrators and DBMS software engineers? (c) What is data modeling? What is its purpose? Briefly describe three commonly used data models
