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Questions: 1. What is a DBMS? Briefly describe the components of a DBMS.
2. Describe a primary key, candidate key, secondary key, foreign key, and a combination key. Use your imagination to provide an example of each key that is not in the textbook.
3. What are entity-relationship diagrams and how are they used? What symbol is used for a relationship? What is an associative entity? Provide an example.
With this knowledge and experience, describe, in your own words, the importance of having a good understanding of databases and database design. Why do you think it is impor
A motor vehicle maintenance center wants to improve its services by using database management systems and data mining what tables are needed in such a database and how can i
Establish a testing approach to identify potential issues. Develop the data model without considering any performance-related issues and then implement it with the available
Write SQL queries for the books database that perform each of the following tasks: Select all authors from the Authors table with the columns in the order lastName, firstName
Write the following procedures: woman_wants_to_enter, man_wants_to_enter, woman_leaves, man_leaves, using counters and sychronisation techniques to ensure that the correct
How did you store the data for this homework? Think about how you store the information helps you to answer the question. How many tables, and which ones, were ?ipp
Construct a query that can be used on a report for determining how many days the customer's invoice will require payment if total amount due is within 45 days. Provide a cop
Obtain the columns names and data types of the view USER_TABLES using the DESCRIBE command. Retrieve the names of all the tables of a user's database tables using the SELECT
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