Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called...
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Transcript of Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called...
![Page 1: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/1.jpg)
Chapter 6
![Page 2: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/2.jpg)
1
• A grouping of characters into a word, a group of words, or a complete number is called a record.
• Answer: FALSE
![Page 3: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/3.jpg)
2
• Each characteristic or quality describing a particular entity is called an attribute.
• Answer: TRUE
![Page 4: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/4.jpg)
3
• Program-data dependence refers to the coupling of data stored in files and software programs that use this data such that changes in programs require changes to the data.
• Answer: TRUE
![Page 5: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/5.jpg)
4
• A DBMS separates the logical and physical views of the data.
• Answer: TRUE
![Page 6: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/6.jpg)
5
• Every record in a file should contain at least one key field.
• Answer: TRUE
![Page 7: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/7.jpg)
6
• Many applications today require databases that can store and retrieve multimedia.
• Answer: TRUE
![Page 8: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/8.jpg)
7
• One of the drawbacks to OODBMS are that they cannot work with applets.
• Answer: FALSE
![Page 9: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/9.jpg)
8• Which of the following is NOT one of the
main problems with a traditional file environment?–A) data inconsistency–B) program-data independence–C) lack of flexibility in creating ad-hoc
reports–D) poor security
• Answer: B
![Page 10: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/10.jpg)
9• A DBMS reduces data redundancy
and inconsistency by –A) enforcing referential integrity. –B) uncoupling program and data.–C) utilizing a data dictionary. –D) minimizing isolated files with repeated
data.
• Answer: D
![Page 11: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/11.jpg)
10• Which of the following best illustrates the
relationship between entities and attributes?– A) the entity CUSTOMER with the attribute PRODUCT– B) the entity CUSTOMER with the attribute
PURCHASE– C) the entity PRODUCT with the attribute PURCHASE– D) the entity PRODUCT with the attribute CUSTOMER
• Answer: B
![Page 12: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/12.jpg)
11
• A characteristic or quality describing an entity is called a(n)–A) field.–B) tuple.–C) key field.–D) attribute.
• Answer: D
![Page 13: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/13.jpg)
12• Which of the following non-digital data
storage items is most similar to a database?–A) library card catalog.–B) cash register receipt.–C) doctor's office invoice.–D) list of sales totals on a spreadsheet.
• Answer: A
![Page 14: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/14.jpg)
13• The confusion created by ________ makes it
difficult for companies to create customer relationship management, supply chain management, or enterprise systems that integrate data from different sources.– A) batch processing– B) data redundancy– C) data independence– D) online processing
• Answer: B
![Page 15: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/15.jpg)
14
• Duplicate data in multiple data files is called data ________.–A) redundancy–B) repetition–C) independence–D) partitions
• Answer: A
![Page 16: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/16.jpg)
15• The logical view–A) shows how data are organized and
structured on the storage media.–B) presents an entry screen to the user.–C) allows the creation of supplementary
reports.–D) presents data as they would be perceived
by end users.• Answer: D
![Page 17: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/17.jpg)
16• In a relational database, the three basic
operations used to develop useful sets of data are–A) select, project, and where.–B) select, join, and where.–C) select, project, and join.–D) select, from, and join.
• Answer: C
![Page 18: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/18.jpg)
17
• Databases record information about general categories of information referred to as ________.
• Answer: entities
![Page 19: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/19.jpg)
18
• Data ________ describes a situation in which the same attribute of a data entity may have different values.
• Answer: inconsistency
![Page 20: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/20.jpg)
19
• A(n) ________ view shows data as it is actually organized and structured on the data storage media.
• Answer: physical
![Page 21: Chapter 6. 1 A grouping of characters into a word, a group of words, or a complete number is called a record. Answer: FALSE.](https://reader036.fdocuments.us/reader036/viewer/2022081800/56649ea25503460f94ba5a3d/html5/thumbnails/21.jpg)
20
• DBMS have a(n) ________ capability to specify the structure of the content of the database.
• Answer: data definition