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1. Discussion of database with the goal of creating Web database applications. There is something of a disconnect between modeling data in an object-oriented language, such as Java, and a traditional database. Explain the differences between the two. Object relational mapping is a technique for dealing with these differences. Do some investigating and discuss some of the software solutions that have been developed to solve this problem.
2. Describe SQL superkeys, candidate keys, and primary keys. How do you create a table with a foreign key? Do some research and post some examples with programming code.
The base application consists of three classes - Doctor, Patient and Hospital. A patient can be a private or public patient and is handled differently in either case. Patients are assigned to Doctors according to availability and preference.
as a dba it is vital that you understand in detail how a query is processed by the dbms. since team retail is using
Consider the UNIVERSITY database described in Exercise Build the ER schema for this database using a data modeling tool such as ERwin or Rational Rose.
Evaluate whether the use of a distributed DBMS structure is appropriate and identify the optimization techniques that should be factored in to enhance the operations of the database in your design.
Consider the EER diagram for a car dealer in the figure below. Map the EER schema into a set of relations. For the VEHICLE to CAR/ TRUCK/ SUV generalization.
edinburgh airport officials are concerned about complaints received by the service department and are about to do an
Databases can grow in data structure and data capacity throughout time. At certain times, it is necessary to perform optimization techniques in order to ensure optimal performance of the database.
bonds and term structure1. graph the bond yield to maturity ytm on the y-axis of an xy-scatter plot with the bond to
Access will draw a line, called_______a, between matching fields in two tables, indicating that the tables are related. You can then select fields from either table. Access joins the tables automatically.
Kitchen Gadgets sells a line of high-quality kitchen utensils and gadgets. When customers place orders on the company's Web site or through electronic data interchange (EDI).
Write the SQL code to delete the row for William Smithfield and write the SQL code that will save the changes
What is a relational database-Write a 1500 word essay on the above question. Your response should include the evolution of 1st generation data models
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