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Create a table according to given data:
Course(Course_Number#, CourseName, Pre_Req_Course_Number)
1. Manufacturer(Manufacturer_Number#, Name)
2. Bed(Bed_Number#, BrandName, Size, Length, Width)
3. Category(Category_Number#, Name)
4. Mattress (Mattress_Number#, BrandName)
5. MattressAndBed(Mattress_Number#,Bed_Number#, Comfort_Rating ): Mattress and Bed has many to many relationships, so this extra entity will be created.
(a) Explain briefly the three parts of a relational Model. (b) Contrast the following terms with an appropriate example: (i) stored attribute v/s derived attribute (ii) en
Speedup Query Processing: A query that includes data at various sites can be split into sub-queries. These sub- queries can be implemented in parallel by various sites. Such parall
The primary key is selected from the
What is advantage of two-way association? Two-way association advantages are following: a) Independent of the classes. b) Useful for existing predefined classes that are
How much would you charge to create a database encompassing an Online Bakery with all the elements below? I. Describe the application that you would like to design. This should
Compare wait-die deadlock prevention scheme with wait-wound scheme Ans: Wait-Die Scheme a) Based upon a nonpreemptive technique. b) If Pi requests a resource present
What is Normalization? Database normalization is a data design and organization method applied to data structures based on rules that help building relational databases. In rel
Define an abstraction by which relationships are treated as higher level entities Ans: Aggregation. It is an abstraction by which relationships are treated as higher level
Q. What is relational algebra and calculus? Explain the relational algebra operators :- Selection and predicate, set operation, joins and division. Sol. Relational Algebra
Ask Write the SQL code that will create the table structure for a table named EMP _1. This table is a subset of the EMPLOYEE table. The basic EMP_1 table structure is summarized in
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