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Suggest how to implement a direct-address table in which the keys of stored elements do not need to be distinct and the elements can have satellite data. All three dictionary operations (INSERT, DELETE, and SEARCH) should run in O(1) time. (Don't forget that DELETE takes as an argument a pointer to an object to be deleted, not a key.)
University XYZ needs a database that keeps track of students, what classes they taken and the grades for each of the classes.
Assume that data warehouse consists of three dimensions time, customer, and cell phone plan, and two measures number of calls and cell phone bill. Sketch a schema diagram for above data warehouse using star schema.
List the different entities or objects, logical processes, data flows, and data stores that are involved, starting from the time you submitted your time sheet.
Pick one of the different types of SQL statements (data definition language, data manipulation language, or data control language). Describe how that type of statement is use.
Identify the business processes which would be evaluated and tracked with a DW/BI application and state your reasoning or justification for including these in the DW/BI.
VSS has an existing software package that controls its high bay systems and wants to rewrite it. The existing system is written in C and uses C-ISAM files to store data.
How many entities are shown by this relation?
Suppose we are to design a registrar's database to store information about students, courses, the courses students have taken. Convert the E/R diagram into a relational schema.
Write a query to determine the cost of the least expensive part in the part table? Format the returned price in dollars and cents using the correct function.
Input names of students from the user, terminated by ZZZ, and create a data file GRADES with records of the form.
Artificially small example of B+ tree is shown here (pdf). (Note only part of tree is shown in detail.) What nodes of example B+ tree are visited to find posting list for "dune"?
Find the average number of books borrowed per member. Take into account that if a member does not borrow any books, then that member does not appear in the borrowed relation at all.
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