CHAPTER 17 DATA MODELING AND DATABASE DESIGN SUGGESTED ANSWERS TO DISCUSSION QUESTIONS 17.1 Why is it not necessary to model activities such as entering information about customers or suppliers‚ mailing invoices to customers‚ and recording invoices received from suppliers as events in an REA diagram? The REA data model is used to develop databases that can meet both transaction
Premium Balance sheet Entity-relationship model Sales order
a microwave which provides heat by electromagnetic waves that has a high frequency‚ with a wavelength if one millimetre to one meter and an intermediate between infrared and shortwave radio wavelengths (Miffin‚ 2002). This allows fast fixation. Technique: Electromagnetic waves are commonly used for carrying out energy and are said to be powerful for non-invasive processing of materials (Miffin‚ 2002). The microwave energy offers relatively large specimens to have the ability of good preservation
Premium DNA
240 - INTRODUCTION TO DATA PROCESSING/MANGEMENT OF INFORMATION TECHNOLOGY Objectives To give a thorough and up-to-date grounding in the realities of commercial applications of Information and Communication Technologies (ICT’s). To Examine the roles of data‚ information and knowledge within modern business organisations‚ and the roles that information and communication technologies (ICT’s) play in supporting people and groups within organisations. To provide students with a thorough understanding
Premium Computer Computer data storage Computer program
of variables Qualitative Quantitative • Reliability and Validity • Hypothesis Testing • Type I and Type II Errors • Significance Level • SPSS • Data Analysis Data Analysis Using SPSS Dr. Nelson Michael J. 2 Variable • A characteristic of an individual or object that can be measured • Types: Qualitative and Quantitative Data Analysis Using SPSS Dr. Nelson Michael J. 3 Types of Variables • Qualitative variables: Variables which differ in kind rather than degree • Measured
Premium Psychometrics Statistical hypothesis testing Validity
5 reasons to use social CRM for support and services By David Taber July 19‚ 2012 11:57 AM ET 2 Comments . CIO - So this article may come as something of a surprise‚ as I’m going to be beating the drums about social CRM again‚ this time for the service and support organization. Why? Social networks give you the quickest access to customers where they already are. Almost anybody you want to do business with is somewhere on Facebook or LinkedIn or product-review networks‚ at least in the United
Premium Customer relationship management Customer service
Observation Techniques Observation techniques allow a researcher to observe behaviors and reactions in order to obtain information. The types of observation are direct versus indirect‚ disguised versus undisguised‚ structured versus unstructured‚ and human versus mechanical. Direct observation gives the opportunity for a researcher to observe behavior as it occurs and indirect observes the effects or results rather than the behavior itself. Disguised observation is when the subject is unaware
Premium Observation Psychology Philosophy of science
Systematic sampling is often used instead of random sampling. It is also called an Nth name selection technique. After the required sample size has been calculated‚ every Nth record is selected from a list of population members. As long as the list does not contain any hidden order‚ this sampling method is as good as the random sampling method. Its only advantage over the random sampling technique is simplicity. Systematic sampling is frequently used to select a specified number of records from a
Premium Sampling Sample
Gathering Information and Writing a Research Paper xxxxxxx xxxxxxx xxxxxxx xxxxxxxx Gathering Information and Writing a Research Paper Writing a research paper for the first time can be a difficult task if not given the proper instruction to complete such an assignment. Breaking a research paper down into separate tasks and sections might ease frustrations for the researcher and give them some fundamental tools for future research projects.
Premium Research
What Is A Data Dictionary? Per the IBM Dictionary of Computing‚ a data dictionary is a "centralized repository of information about data such as meaning‚ relationships to other data‚ origin‚ usage‚ and format." Essentially‚ it is documentation or data about data in a file or database‚ also called metadata. Typical Items In A Data Dictionary For each field or column in a database table‚ describe the following elements: Item Contents File/Table Name The name of the file or table where
Premium Data modeling SQL Relational model
Process in Houston CIVT 301 Outline Wastewater collection data in Houston What is sewage treatment? Where does wastewater come from? Factors that affect the flow of pipelines Industrial wastewater? Storm water/ Data The treatment plant operator Sources of wastewater Why treat wastes Waste water treatment facilities Treatment processes Drinking water What can be done to help? Wastewater collection data in Houston 640 square miles area 3 million citizens served 6‚250 miles
Premium Sewage treatment Water pollution Water