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We consider the following relational scheme:
Personnal ( EmployeeNumber, Name, FirstName, HiringDate , TitleFunction ) of key EmployeeNumberThere are 1000 employees, 25 different functions (title of a function have about an average of 20 characters) equi-distributed between employees (i.e. 40=1000/25 employees having the same function).A number (like the number of each employee) is an integer coded by 4 bytes.
Give an entity-association scheme correspondent to relational scheme.Propose another relational scheme.Give an entity-association scheme correspondent to relational scheme proposed.Compare the activity (quite theoretical) of the disk (in number of bytes) required for each of both relational.Indicate the advantages and the inconveniences of the new relational scheme.
Create a Microsoft Access database. Create the tables, fi elds, data types, and primary key(s) for the database. Create the relationship(s) needed between the tables.
Explain the content of this document in natural language;Design the graph representation of document;
Implement that entity as a database table with two subtypes, Games and Movie.
How many copies of the book titled „The big magic? are owned by the local library whose name is "Newtown" library?
Create tables in 3NF. As you create the database, include different codes for at least three of the fields. Use sample data to populate fields for at least three records in each table.
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.
Need a system that networks its 3 campuses in the US and one campus in Singapore. Transaction data for all campuses should be available to all locations. In addition, students should be able to use the Internet to view classes, enroll, register, and ..
You have probably seen that already when you tried to create an E-R diagram. Visio uses notation and graphical shapes that are not the same as those in your text. If you look at some of the links to schemas, you will see a similar sort of thing.
How many entities are shown by this relation?
Create and run the following sql queries and submit the screen shot of your result. Also submit the file lab_06_03. sql
ER diagram for the Baxter Aviation database
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.
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