Central database schema, Database Management System

Consider an information system designed for an online company which provides IT products and services. These include desktops, laptops, networking products, IT books, parts, and technical support etc. Purchases made through the online store can be collected from various outlets. Individual outlets are responsible for maintaining their respective stocks. The products and services are provided by contracted vendors. The information system can be viewed as a virtual shop which is capable to access all products and services in store across all outlets. Buyers are not aware of the existence of different outlets. In the virtual shop, a buyer can assemble a shopping cart and check out by paying in one transaction using Paypal. The buyer will designate a specific outlet for collection or request shipment.

Briefly describe the system you use as the basis for your analysis.

Quantitative analysis

a. Make an estimation of the size of the product catalogue in your chosen product types.

It should include both the number of records and the size of an individual record. State the basis of your estimate.

b. Make an estimation of the number of queries per day, and of the number of purchases. Estimate the size of two years of history of sales including both the number of records and the size of an individual record. State the basis for your estimates.

3. Central database schema

Show a centralised schema to support the operation of the system you have chosen, including in particular: the product catalogue; the outlets and respective stocks; customer records (including PayPal details and purchase history for past 12 months); shopping cart (including whether the order is still in process i.e. active, or has been shipped, i.e. inactive).

4. Distributed database design

a. Identify a number of functional units to support the operation of the system you have chosen, including for example: product catalogue, order processing, stock management etc.

b. Make a fragmentation of the schema designed in 3 above which includes at least one primary/derived horizontal partition, at least one vertical partition and at least one.

Posted Date: 3/8/2013 5:55:32 AM | Location : United States







Related Discussions:- Central database schema, Assignment Help, Ask Question on Central database schema, Get Answer, Expert's Help, Central database schema Discussions

Write discussion on Central database schema
Your posts are moderated
Related Questions
Using the questions found at the end of Chapter 9 in your textbook, complete this homework activity. Students will submit a Word document answering questions 2, 3, and 4.

Mention the type of constraints we can specify in the CREATE command of DDL. The type of constraints that can be specified are as follows:- PRIMARY KEY, NOT NULL, UNIQUE, FOR

Design Of Distributed Databases: The distributed databases are mainly relational at local level. So a local database schema is the similar as that of a centralised database design

The primary key is selected from the

Illustrate the Deployment Diagram A deployment diagram shows all nodes on network, their processor execution and interconnections. In a dynamic model, this is used to represen

Describe different steps of the object-oriented design process.  The broad steps of the object-oriented design process are: a. Define context and modes of use of the system

This language that enable user manipulate to or access data as organized by appropriate data model. Low level or Procedural DML : DML needs a user to specify what data ar

Describe the development process of Object oriented methods Object oriented methods have roots which are strongly anchored back in the 60s, functional and structured methods we

Q.   With the help of a suitable diagram gives module wise explanation of system architecture of DBMS. Sol. A Database management is a collection of interrelated data and col

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