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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?
Write a program to solve the following problem: A TV set is purchased with a loan of $563 to be paid off with 5 monthly payments of $116. The interest rate is 1 percent per month. Display a table giving the balance on the loan at the end of ea..
We want to construct a database for a world-wide package delivery company. Define a set of relational schemas and identify primary and foreign keys. Try not to include redundant schemas.
To analyse a set of data, and write a memo, identifying and explaining your insights into the operation of Todd Restaurants.
List the names of agents that placed an order for customer C003 or customer C006. List all pair of products names that are in the same city, along with their city name.
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?
Sketch a DFSA for identifiers which contain only letters and digits, where identifier should have at least one letter, but it need not be first character.
Explain the content of this document in natural language;Design the graph representation of document;
Did the corresponding lines for invoices 1001 and 1008 in table LINE get deleted automatically? Can you explain why?
In 250 - 300 words describe role of a database administrator and the tasks performed by this role. Also, describe why this role is important in Database Management.
Write a SELECT statement that returns three columns: InvoiceTotal From the Invoices table, 10% 10% of the value of InvoiceTotal.
Implement a database of courses and students for a school.
Draw an ER diagram for your database scenario. Design a set of 3NF tables for your database scenario.
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