studies &research Information technology department Database systems Report on: (Comparison between Relational database & object oriented database) By: Mohammed Hussein Mahmoud Mustafa khedr To: Dr. Saad Darwish Introduction A database is a means of storing information in such a way that information can be retrieved from it. Thus a database is typically a repository for heterogeneous but interrelated pieces of information. Often a database contains more than one table. Codebooks and dictionaries
Premium Relational model Database Data modeling
Normalization A logical design method which minimizes data redundancy and reduces design flaws. Consists of applying various “normal” forms to the database design. The normal forms break down large tables into smaller subsets. First Normal Form (1NF) Each attribute must be atomic • No repeating columns within a row. • No multi-valued columns. 1NF simplifies attributes • Queries become easier.
Premium Database normalization
In what ways are history and heritage similar‚ and in what ways are they different? For many years the difference between heritage and history has been confused. Often the line between the two is merged creating a general measure of difficulty when it comes to separating the two. ‘The relationship between heritage‚ history and memory has been subject to much debate recently among geographers‚ historians and cultural critics’1. However it is clear‚ that ‘Heritage is not history’2 and that ‘Heritage
Free History Historiography Difference
What are some of the motivations for virus programmers? 1: Anger issues There are those who‚ for whatever reason‚ just do destructive things for the sake of their destructiveness. They may be malicious narcissists‚ psychopaths‚ or just so self-centered in their impression that the whole world is against them that they will blindly lash out at anyone and everyone when they get the chance. They might think they’re misunderstood and want to communicate with the world by harming it in some way 2:
Premium Computer virus Computer Trojan horse
What is Merger and Acquisition and what are some Effects on Employees? Abrom B. Cooper BUSN601 Global Management Perspective Professor: Brenda Harper May 9‚ 2010 Introduction This research paper is about Mergers and Acquisitions and the effects and consequences it has on employees. Mergers and acquisitions are sometimes referred to as takeovers or raid. In this paper‚ I will attempt to elucidate some of the reasons behind M&A and some of the effects it has on employees. There are
Premium Mergers and acquisitions
Although‚ data is separated into different and more complex tables during normalization‚ the process of normalizing a database can help to organize data more efficiently by minimizing redundancy and providing more accurate records. During the process‚ column and field names are consolidated into more specific ones to avoid repetition of data. In many cases‚ tables are divided into two or more tables and linked via a relationship using their Primary Keys and/or Foreign Keys. The main goal is to
Premium Data modeling Database normalization Relation
Relaional Database Management Questions Planning for backup and recovery of database information is done by _________________ A.Data Assurance team B.Data management C.DBA D.Data-Query Reset Selection Question 2 of 10 10.0 Points Please choose the functions of a Database? A. Data Definition and Manipulation B. Data Recovery and consistency C. Performance of Queries D. Data Dictionary Maintenance A.A‚ B‚ C and D B.A‚ C and D C.B‚ C and D D.A‚ B and C
Premium SQL Database Data modeling
3 Crossing Borders 1. What competencies are appropriate to ensure greater effectiveness of U.S. employees operating in a maquiladora or other non-U.S. organization? The competencies appropriate to ensure greater effectiveness of U.S. employees operating in maquiladora‚ or other non-U.S. organizations‚ are as follows: · The ability to understand the need for an environmental scan‚ and interpret what the environmental scan highlights‚ before reaching their work destination. This can help to
Premium Management Culture Skill
What are some consequences of the Columbian Exchange? The Columbian exchange was a movement that changed the Americas permanently. The Americas were inhabited by the Indians which lived in tribes. When Conquistadores such as Cristobal Colon arrived they brought in much more than just people. Food‚ animals‚ diseases and new customs changed America. First of all the Native American population decreased because of slavery and illnesses a ninety percent. This was a huge change in the population
Premium Slavery Population history of American indigenous peoples Indigenous peoples of the Americas
Some Key Terms and Concepts in Anthropology By Lewis K. Thomas 1. Culture. A learned system of beliefs‚ feelings‚ behaviors‚ and rules for living acquired and shared by a group of people. A person’s culture powerfully influences her/his attitudes‚ perceptions‚ notions of what is ‘reasonable’ or ‘unreasonable‚’ attractive or disgusting‚ correct or incorrect behavior‚ etc. a. Enculturation. The process of ‘learning’ or ‘acquiring’ a cultural system; the process of cultural transmission to infants
Premium Sociology Culture Psychology