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When a student has not chosen a major at a university, the university often enters a value of "Undecided" for the major field. Is "Undecided" a way to represent the null value? Should it be used as a default value? Justify your answer carefully.
Input names of students from user, terminated by ZZZ, and design the data file GRADES with records of form: student (string), test1 (integer), test2 (integer), test3 (integer).
What advantage is there in storing metadata in tables? Is Microsoft Access a DBMS? Why or why not? List the several consequences of a poorly designed database.
What is the key value of the 4th index record on the top level, assuming each index record points to the record with the highest key value in a block of the next level down?
What is lock granularity? Explain the use of BEGIN, COMMIT, and ROLLBACK TRANSACTION statements. Explain the meaning of expression ACID transaction.
Design a minimal relational database for Pieces Boutique. By minimal, it is meant that option to post a key into existing table because of either needed participation or a discernible high load could be exercised where appropriate.
Controls which need a database to either execute transaction completely or not at all.
Consider following opinion shared by some people: database management systems and data-warehousing techniques are the greatest threat to individual privacy in modern times. What is your opinion?
Why are these so significant yet so frequently ignored by developers? Write the long term problems when these constraints are not implemented? "
Create a state transition diagram that describes typical student states and how they change based on specific actions and events.
Write the application for university admissions office. Prompt user for a student's High School Grade Point and an admission test score.
In physical database design, referential integrity constraints can be defined. What actions does referential integrity constraint prevent from happening when data is inserted in table which contains this constraint?
How can you make your database more hacker proof? How do you ensure the security of an organizations distributed database?
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