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Identify the 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:
a. How should data be stored on a disk to maximize efficiency?b. Is there a vacancy on flight 243?c. Could a relation be stored as a sequential file?d. How many times should a user be allowed to mistype a password before the conversation is terminated?e. How can the PROJECT operation be implemented?
Indicate the changes (using the shorthand representation) that you would need to make to the original premiere products database desing to support the following requirements.
Find the name and membership number of members who have borrowed more than five different books of that publisher.
Create a stored procedure that updates the members' balance in the membership table by correctly recording the current or outstanding balance for each customer.
First, specify the foreign keys for this schema, stating any assumptions you make. Next, populate the relations with a few example tuples.
A small business with 100 computer workstations is installing a new local area network. All of the users perform the usual operations of e-mail. State your reasoning. Draw a floor plan for each If possible, show both floor plans on one page.
Database Questions: What do you mean by data base scheme? What do you mean by cardinality ratio? What do you mean by degree of relation?
Create ERD containing Order and Customer entity types connected by 1-M relationship from Customer to Order. Select suiatble relationship name using your common knowledge of intersection.
our current database uses dictionary-managed tablespaces. In running various performance tuning scripts, you have discovered that one of these tablespaces seems to have run out of space long before you calculated that it would.
Create an entity-relationship diagram and design accompanying table layout using sound relational modeling practices and concepts.
Illustrate relational algebra expressions for names of all salespeople, names of all salespeople having ORDER row and names of salespeople not having ORDER row.
Suggest how to implement direct-address table in which keys of stored elements don't require to be distinct and elements can have satellite data.
Relational database is based on fact that data in one table can be tied, or related to data in another table. To do this, database utilizes various types of keys to form or define these relationships.
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