h. T 9) In a diagram, crows feet notation conveys more information about the relationships. i. T 10) A primary key uniquely identifies each row in a database table. j. F 11) In a relational database, all data is kept in tables, even the information about the tables. k. T 12) SQL is the language used by relational databases to create objects and to manipulate and retrieve data. l. T 13) An entity is someone who is interested in the database.
Answer: True Difficulty: Easy Reference: p. 236 | 10. | A data warehouse may be updated by a legacy system. Answer: True Difficulty: Easy Reference: p. 239 | 11. | A data warehouse is typically comprised of several smaller data marts. Answer: False Difficulty: Medium Reference: p. 239 | 12.
Think generically about the idea of a networking standard, ignoring any particular standard or standards group. Which of the following is typically true of a standard? (Choose two answers.) a. It exists as a written document.
What symbols are used in an ER diagram for entities, relationships, and attribute? Review Questions #3-7, page 61 3. What is an associative table? An associative table is an abstract data type composed of a collection of unique keys and a collection of values, where each key is associated with one value (or set of values). 4.
On top of the 3-page limit, you can include (a) one title page, (b) one appendix page which includes tables or figures only, and (c) as many reference pages as you wish. An example of a reference is: Adam, J. A. 2003. Mathematics in nature: Modeling patterns in the natural world.
Unit 1 Assignment 2 Binary and Hexadecimal Conversion Explain how program data is organized in memory… A computer file is a resource for storing information, which is available to a computer program and is usually based on some kind of durable storage. A file is "durable" in the sense that it remains available for other programs to use after the program that created it has finished executing. Computer files can be considered as the modern counterpart of paper documents which traditionally are kept in office and library files, and this is the source of the term. The way information is grouped into a file is entirely up to how it is designed. This has led to a plethora of more or less standardized file structures for all imaginable purposes, from the simplest to the most complex.
• output would be the sum of all four rooms, Total_Areas. Ah, this is the sole required output! • All outputs will be declared as float because of the possibility of decimals 2. Necessary Inputs. To find the areas of the each room, we will need the input of the length and width of each room.
A) batch processing B) data redundancy C) data independence D) online processing Answer: B 27) Duplicate data in multiple data files is called data ________. A) redundancy B) repetition C) independence D) partitions Answer: A 28) A DBMS makes the A) physical database available for different logical views. B) logical database available for different analytical views. C) physical database available for different analytical views. D) logical database available for different physical views.
Jason Huffman Local Area Network 2 Mr. Wallace Select one or more correct answers for each of the following questions. Chapter 12 1. Which of the following is not one of the elements of the Domain Name System (DNS)? a. resolvers b. relay agents c. name servers d. name space 2. What is the maximum length for a fully qualified domain name, including the trailing period?
1. Why is all data stored in a Computer in binary form? Because computers only understand the binary numbers. (0, 1) 2. What are the four primary functions of hardware?