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PART 1
#1. Identify two benefits of separating application software from the database management system. #2. 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?
#3. Design a relational database containing information about music composers, their lives, and their compositions. (Avoid redundancies similar to those in Figure 9.4)
PART 2
#1. Suppose a sequential file contains 50,000 records, and 5 milliseconds are required to interrogate an entry. How long should we expect to wait when retrieving a record from the middle of the file? #2. The chapter drew parallels between a traditional file index and the file directory system maintained by an operating system. In what ways does an operating system's file directory differ from a traditional index?
Examples for small n are given bellow, where a small square box represents an unsuccessful search. Prove that leaves of any binary search tree are located in the bottom two levels.
Prepare an ER diagram for the database described below(using crows foot notation). Be sure to identify all required entities, attributes, and relationships (including cardinalities). State any assumptions you make, and indicate a primary key for e..
Controls which need a database to either execute transaction completely or not at all.
The prototype program should be running without errors throughout the two Phases: Information Gathering and Information Presenting.
Investigate how databases solve multiple concurrent data management issues comprising lost updates, deadlocks and different kinds of lock management styles.
Create an ER diagram using the set of requirements provided for Oxford City Council's bicycle sharing scheme and identify the minimal set of functional dependencies and all candidate keys for the relation R
Difference between obsolescent and redundant stocks
Create a database design specification Enhanced Entity Relationship Diagram (EERD) and Relational Data Model from the given business description - Database Management System
supplies % of votes each candidate is likely to receive, based on popularity rating. Actual number of votes received is that percentage of General votes. You should enter data for each candidate in each of the eight constituencies.
Compute the closure sets of R, find all non-trivial dependencies and what are the candidate keys of R?
What is the average length of stay per room type. What is the average number of visitor per room type. What is the base income per room (i.e., length of visit multiplied by the daily rate) during a specified period of time
A vendor builds multiple types of tablet computers. Each hs a type identification number and a name. The key specifications for each type include amount of storage and display type.
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