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Explain with examples different types of keys used in relational database, how they help relating different tables.
Write down the SQL code in order to carrying out the following requests. Display all the data in each of the four tables. Do not display the foreign key columns.
Company XYZ needs a program to build a database concerning employee information.
How many copies of the book titled „The big magic? are owned by the local library whose name is "Newtown" library?
Create 3 rows of data for each table ensuring that the referential integrity is valid and add the 30 rows of data to the appropriate table in your database (using any appropriate method available).
Create a database from scratch that contains, at a minimum, the elements listed below
Need a page and half on concept of organizational intelligence. It must specifically talk about organizational intellignece being outcome of organization's efforts to gather store, process and interpret data.
Based on the information in the Bike Mania case study, use a suitable CASE tool or drawing package to draw up a set of diagrams showing the current physical view of the systemusing the unified modeling language (UML 2.0) notation
Peer reviewers are the key participants in which activity?
Draw a DFD (Context and Level 1) for placing an order based on the E-R diagram shown here.
Imagine that you have been hired to fulfill their need of enhancing the data repository for their current reservation processing system. Upon reviewing the system, you find that the data structure holds redundant data and that this structure lacks..
You are interested in analyzing some hard-to-obtain data from two separate databases. Each database contains n numerical values.
Design a Database schema
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