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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?
What is meant by a weak relationship? Provide an example. What is meant by weak entity? What do you understand by relationship degree?
Use the prime_minister database (prime_minister.sql) from the Interact Resources site. Answer the following queries from that database.
What is the order P of the B+-tree if B+-tree access structure on the key is constructed? What is the number of leaf-level blocks needed if blocks are approximately 69% full (round up for convenience)?
Create a structurally sound relational database schema showing the minimum number of fields, tables, and relationships between the tables.
Find the name and membership number of members who have borrowed more than five different books of that publisher.
Use Microsoft Access to develop preliminary (no keys and no relationships) database tables for Huffman Trucking Driver Log.
Create a data warehouse for electronics store chain. Chain has 20 stores in 5 cities. Each store has different sections comprising computers, DVDs, TVs, audio, home appliances etc.
Create a link list in ADT c to maintain employee information like name,empid,basic salary and address.1.add employee info to the list if the empid is valid.
Using Internet as the research tool for extra information not presented in text, describe why application roles are important part of the security model for databases.
At this point in the design process, you would have a detailed physical schema created for a database. How would you approach converting your schema into a database, complete with sample data? Explain your approach in two to three paragraphs.
Peer reviewers are the key participants in which activity?
Illustrate all the data in each of four tables. Don't show foreign key columns. Write down the names and e-mail addresses for all customers who have had stove repair which cost more than $50.
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