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Assume that a student table in a university database has an index on StudentID (the primary key). and additional indexes on Major, Age, Marital status, and HomeZipCode.
Further, assume that the university wanted a list of students majoring in computer science, over the age of 25, and Married.
How could indexes be used so that only records that satisfy the qualification are accessed?
What are the uses the above Index used?
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.
Prepare the relational schema for database
Recognize level within a database system (user, programmer of application software, and designer of the DBMS software) at which each of the following concerns or activities occur.
Difference between obsolescent and redundant stocks
Write the procedure named Get_frequencies which constructs character frequency table. Input to procedure must be a pointer to the string, and pointer to array of 256 doublewords.
Explain the concept of physical data independence and its importance in database systems, List four significant differences between a file-processing system and a DBMS.
Compare activity (quite theoretical) of the disk (in number of bytes) required for each of both relational. Write down the advantages and inconveniences of new relational scheme.
Controls which need a database to either execute transaction completely or not at all.
Prepare a report - The report should be related to Business communications.
Create a Microsoft Access database. Create the tables, fi elds, data types, and primary key(s) for the database. Create the relationship(s) needed between the tables.
What are the functional dependencies among the data represented in this first normal form relation?
Consider relation schema r(A,B,C,D,E, F) and a set of functional dependencies {A BCD,BCDE,BD,DA}. Calculate canonical cover for set of functional dependencies (show each step of your derivation with an explanation).
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