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Compare the two non-sequential file structure models: the random (hashed) file and the index file. What advantages does the first one have over the second and what advantages does the second have over the first? What would be your criteria for choosing one over the other for different applications?
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.
Draw an ER diagram for your database scenario. Design a set of 3NF tables for your database scenario.
A database at a college is required to support the following requirements. Complete the information-level design for this set of requirements. Determine any constraints you need that are not stated in the problem.
Describe the database and describe the four characteristics of the database? Explain the Relational Database and generate a relational database for five employees.
Prepare the relational schema for database
Create and run the following sql queries and submit the screen shot of your result. Also submit the file lab_06_03. sql
What are the functional dependencies among the data represented in this first normal form relation?
Evaluate the success WellCo and PharmaCARE shareholders
Explain the information-gathering techniques and design methods you would suggest to use for project. Recognize the key factors that help ensure the information required for the project.
Create a database from scratch that contains, at a minimum, the elements listed below
List the sequence of relational algebra operations needed to implement the queries.
Illustrate relational algebra expressions for names of all salespeople, names of all salespeople having ORDER row and names of salespeople not having ORDER row.
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