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Question: 1. What is an entity supertype, and why is it used?
2. What kinds of data would you store in an entity subtype?
3. What is a specialization hierarchy?
4. What is a subtype discriminator? Give an example of its use.
1. what a query execution plan?2. discuss the reasons for converting sql queries into relational algebra queries before
you are to design and implement the database of Best Home real estate that you have modelled in assignment-1 and a series of SQL queries to reflect the business logic of it
Design supermarket management system with it's problem definition
CSC 553 Advanced Database Topics Assignment. Describe the difference between optimistic and pessimistic concurrency control mechanisms. Define transaction deadlock (what is it / what causes it). Why do we always have to record the log entry before we..
Create a data dictionary for a simple database. Develop an ER diagram. Clearly label all entities, primary and foreign keys, relationship, connectivity and cardinalities.
Develop and demonstrate SQL skills
Create a Data Flow Diagram (DFD) relating the tables of your database schema through the use of graphical tools in Microsoft Visio or an open source alternative such as Dia. Note: The graphically depicted solution is not included in the required page..
Why can data warehouses not replace databases and become "operational data warehouses"?-How radically would data warehouses have to change to become a viable replacement for databases?
" Do You Know What It Takes to Design an HRIS Database Management System (DBMS)?: Please respond to the following:First, watch the following two (2) videos from the lynda.com course Relational Database Fundamentals with Adam Wilbert. Then, respond ..
Identify all the components in the data hierarchy from the bit to the database. - What is the difference between a data attribute and a data item?
vehiclerentaloz data warehousevehiclerentaloz is a large chain of vehicle rental company over 500 stores distributed
Respond to the following in 100 words or less. Work must be cited.
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