A data dictionary is a file that defines the basic organization of a database. A data dictionary has a list of all files in the database‚ the number of records that are in each file‚ the names and types of each field. The data dictionary is hidden from users so that it is not accidentally destroyed. The data dictionary only keeps bookkeeping information and does not actually contain any data from the database. The database management system cannot access data from the database without a data dictionary
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Evolution Essay: MISCONCEPTION: EVOLUTION IS JUST A MYTH. There are many debates about whether evolution is real or if it is just a theory. Although a small part of evolution deals with the origin of life‚ majority of the theory deals with the changes after the origin. Every time somebody who is not very involved in the science community reads about Evolutionary Theory‚ they automatically think of the standard definition of theory‚ a guess‚ when in fact‚ scientifically‚ it is a well-substantiated
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HL7 eLearning Course Module 2: Data Exchange Standards Learning Objectives: 1. The reader should understand how HL7 messages are transmitted in real time application interfaces. 2. The reader should understand what are Lower Level Protocol (LLP) when discussing the transmission of the HL7 Messages. 1 HL7 eLearning Course Data Exchange Standards • Lower Layer Protocol (LLP) is the most common mechanism for sending unencrypted HL7 message over a local area network‚ such as those found in
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Types of Storage Devices Physical components or materials on which data is stored are called storage media. Hardware components that read/write to storage media are called storage devices. Two main categories of storage technology used today are magnetic storage and optical storage. Primary magnetic storage o Diskettes o Hard disks (both fixed and removable) o High capacity floppy disks o Disk cartridges o Magnetic tape Primary optical storage o Compact Disk Read Only Memory (CD ROM)
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"What is the evidence for evolution?" When Darwin first introduced the idea of evolution through natural selection in his on the Origin of species (1859)‚ he faced extensive doubt surrounding his ideas. This was mainly due to the fact that he did not have a substantial amount of knowledge on the idea of inheritance. Fast forward to the twentieth century when natural selection was explained through the use of Mendelian theories‚ the knowledge of genetics was finally beginning to form evidence for
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Question 1 What is a data warehouse? What problems does it solve for a business? A data warehouse is a place where data is stored for archival purpose‚ analysis purpose. Usually a data warehouse is either a single computer or many computers servers tied together to create one giant computer systems. Data warehouse solve a lot of problems to companies as it helps to structure files and avoid unnecessary duplication of data. Data warehouse also allows to easily updating data and encourages management
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Adoption of Health Data Standards Health Data Standards (HDS) are a key part of the construction of a National Health Information Network (NHIN). Having these standards will increase interoperability of various groups and organizations‚ improve safety‚ lower costs‚ and enable providers in all aspects of healthcare to access the same patient medical information easily and efficiently. W. E. Hammond (2005)‚ discusses the urgent need for HDS‚ the process of creating these standards‚ problems and issues
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1. What is trading standards? What impact can they have on your business? Trading Standards is the name given to local authority departments in the UK formerly known as Weights and Measures. Frequently‚ the Trading Standards enforcement functions of a local authority are performed by a small part of a larger department which enforces a wide range of other legislation: environmental health‚ health and safety‚ licensing and so on. 1 What you sell There are a few general laws that affect all consumer-facing
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“I have a dream that my four little children will one day live in a nation where they will not be judged by the color of their skin‚ but by the content of their character”(King). Minister Martin Luther King Junior gave the historic “I Have a Dream” speech‚ which was created to help African Americans receive their rights and gain equality. Consequently‚ Dr. King was a very large part of the Civil Rights Movement and is a very iconic symbol of the act. This powerful address was told on October 28th
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Maya Angelou once said‚ “People will forget what you said‚ people will forget what you did‚ but people will never forget how you made them feel.” I often find that quote to be precisely true. “Araby” is a section of the book “The Dubliners”‚ which are all created by James Joyce. This story’s main focus is on something that I feel is pretty common nowadays: young love. It’s about a young boy that has an infatuation with his friend’s sister. He obsesses over her‚ and he watches her every move. The
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