It helps to minimize data redundancy i.e. there should not be any multivalued attributes. Moreover eliminating the repeating groups. 2. Helps to make database structure flexible. It means it could allow to add new data values and rows in a relation structure without reorganizing the database structure. 3. To make consistency of data throughout the database i.e. it should not suffer from anomalies as given below: a. Insert Anomaly – It occurs due to lack of data i.e. data items are scattered
Words: 520 - Pages: 3
In this exercise, you will use database software to design a database for managing inventory for a small business. Sylvester’s Bike Shop, located in San Francisco, California, sells road, mountain, hybrid, leisure, and children’s bicycles. Currently, Sylvester’s purchases bikes from three suppliers, but plans to add new suppliers in the near future. This rapidly growing business needs a database system to manage this information. Initially, the database should house information about suppliers
Words: 320 - Pages: 2
schema is finalized. The database tables are created. Primary, Foreign keys, database constraints and database integrity rules are specified at this stage. At this stage, the file organization is performed. File organization is the way the database relations are to be stored on the storage medium. The file organization is decided on the basis of maximum speed of access, the type of access
Words: 736 - Pages: 3
Let A1,A2,...,An be attribute names with associated domains D1, D2, . . . , Dn, then R(A1: D1,A2: D2,...,An: Dn) is a relation schema. For example, Student(StudId: integer, StudName: string, Major: string) • A relation schema specifies the name and the structure of the relation. • A collection of relation schemas is called a relational database schema. * 1. List the names of all students who have borrowed a book and who are CS majors. πStName(σSTUDENTS.StId=borrows.StId (σMajor=’CS’(STUDENTS)×borrows))
Words: 700 - Pages: 3
this is the personnel Department led by a Personnel Manager. b) Under the Personnel Department are the different sections one of which is the Employee Benefits Section that is responsible for health insurance, life insurance, retirement benefits, educational benefits and worker compensation claims. c) Six months ago, Ms Susan Benson was hired as the Employee Benefit Section Supervisor( first line manager) replacing Mr. Art Hidalgo who retired. d) There are 6 employees under the Supervisor who has
Words: 753 - Pages: 4
happens to be an employer who is providing the “flyer points” given to worker who happens to be a family member in regards to the employment. This means, Fringe Benefit Tax will only affect where the employee and the employer are family related and that flight reward payments are given in relations with employment.For instance in the Payne’s case 1999 the Federal Court observed that the flight rewards gotten in consumer loyalty promotions are not income meaning that they are not subject to Fringe
Words: 885 - Pages: 4
performance Indirect pay Mandatory benefits, pension plan, health and life insurance, pay for time not worked, employee services, and other benefits. Base pay: * Base pay: is the portion of an individual’s compensation that is based on time worked not on the output produced or results achieved. * Base pay accounts for 75 to 80 percent of the compensation for a typical employee, performance pay about 5 to 10percent, and indirect pay about 15 percent of the total compensation. However these
Words: 5823 - Pages: 24
Database Design Paper Joseph Schmosef University Of Phoenix (ecampus) DBM/380 Sunday, April 01, 2012 “A database is a structured collection of records or data that is stored in a computer system. In order for a database to be truly functional, it must not only store large amounts of records well, but be accessed easily. In addition, new information and changes should also be fairly easy to input.” (tech-faq.com) To ensure usefulness over the long-term, databases should be built with high
Words: 668 - Pages: 3
Database Design DBM 380 | | Databases Databases are electronic filing systems that consist of objects (Microsoft, para 2.) providing a quicker means to data retrieval than traditional paper and pen models. They have more flexibility than standard spreadsheets and offer the ability to run query searches. A properly designed database can retrieve items in complex searches; a task that might take hours or days manually, in a matter of minutes. Databases are designed to store large amounts
Words: 637 - Pages: 3
Big Data and NoSQL Abstract The combination between Big Data and NoSQL is one made of inevitability. As data grows larger and larger, the weaknesses in the relational data model are exacerbated. NoSQL technologies grew out of the need for fast query speed and real-time analytics from data sources too large for traditional SQL. Introduction A web site running with a large number of users/members will experience the dreaded Big Data Performance Inconsistency. When you need the web site to respond
Words: 814 - Pages: 4
