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Given the file structure shown in Figure P1.1, answer Problems 1-4.
1. How many records does the file contain? How many fields are there per record?
2. What problem would you encounter if you wanted to produce a listing by city? How would you solve this problem by altering the file structure?
3. If you wanted to produce a listing of the file contents by last name, area code, city, state, or zip code, how would you alter the file structure?
4. What data redundancies do you detect? How could those redundancies lead to anomalies?
You have a company, specializing in managing technology solutions. you have ben just hired by big firm to execute a well-planned strategy.
Data processing needs taking or receiving the data from a source and doing something with it. The same can be said about the transaction processing. When working along with a file, whether it be a fixed length.
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.
Use technology and information resources to research issues in database systems. Write clearly and concisely about relational database management systems using proper writing mechanics and technical style conventions.
Implement that entity as a database table with two subtypes, Games and Movie.
Knowledge and Data Warehousing
The data dictionary serves as an important data management tool by? assigning attributes to the data, maintaining data in updated form.
Design an updateable database for storing customer and sales data. Explain how to deal with the problems of missing data.
Draw an ER diagram for your database scenario. Design a set of 3NF tables for your database scenario.
What actions does a referential integrity constraint prevent from occurring when data is inserted in a table that contains this constraint?
Explain these situations. When would the database be more beneficial than sequential file? Is it possible for two kinds of permanent storage to be used interchangeably?
Draw an Entity Relationship diagram for the system and Identify the table design for the database displaying all the fields/attributes. Ensure that all tables are in 3NF. You also need to identify the primary keys and foreign keys, where applicable..
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