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"Nothing more than a few sentences. There is no word limit. I would not put more than a paragraph into it.
"Databases can enforce business rules on permissible values by implementing declarative constraints in the database. These include NOT NULL, CHECK, UNIQUE, REFERENTIAL INTEGRITY, and PRIMARY KEY constraints.
Why are these so important yet so often ignored by developers? What are the long term problems when these constraints are not implemented? "
Design a nested menus interface for a check-in and check-out hotel reservation system that can be used internationally.
What is meant by a weak relationship? Provide an example. What is meant by weak entity? What do you understand by relationship degree?
At this point in the design process, you would have a detailed physical schema created for a database. How would you approach converting your schema into a database, complete with sample data? Explain your approach in two to three paragraphs.
Assume you manage business activity which needs a new IS with a database. The development team is divided on which DBMS you must use. One faction wishes to use oracle,a second wants to use MtSQL, and a third wants to use SQL server.
Practice on topic of Normalization
Write a program that models an employee. An employee has an employee number, a name, an address, and a hire date. A name consists of a first name and a last name.
Show the REA diagram using Microsoft Word
You should choose a data storage problem of your interest and identify the different pieces of data that should be stored in database.
Design relation schemas for the entire database.
Create a query that spans both tables. Eliminate redundant fields. Modify the Query to select only those Customers that had service dates in October and November 2006.
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.
Find the entities from the functional requirements. Entities can come from Nouns in the text, they may also come from forms, reports and legacy code.
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