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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?
The array was the first example of a structured data type that can hold multiple values. The structure is the second example
Several times, database triggers are utilized to record logins by users. Here is the example of login trigger that inserts row into table every time a user connects.
To analyse and comprehend a provided ER diagram and Database Schema and implement a database based on the provided ER diagram and Database Schema
Looking at the predictive accuracy (Percent correct) results for tree learning on these data sets, has learning improved accuracy over the baseline ?
Create a database from scratch that contains, at a minimum, the elements listed below
Write the functional dependencies in the following table that concerns invoicing (an application Premiere Products in considering adding to its database), subject to the specified conditions.
To what kind of list would you change it? What would you require to change about content in order for new list type to be effective for purpose of list?
Draw a decision tree that describes the merchandise inventory management process.
How to decide which attribute should be there in the table and schema? How to identify the primary keys, foreign keys, domain, E-R diagram and 20 Queries on the same database.
What is the maximum rate at which data can be read from disk, assuming that we can only read data from one surface at a time? What is the average rotational latency?
Explain the differences between the storing data in Access and Excel. Why you would use a spreadsheet over the database?
Write a 2 page research paper (excluding the title page) on the Turing and von Neumann models. Compare and contrast each and discuss which model is better and why.
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