Test
Chapter 8
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Preguntas del test (75)
1What is a reference work of data about data compiled by systems analysts?
- AA) data dictionary
- BB) data flow diagrams
- CC) structured analysis
- DD) design
2What become(s) important for large systems that produce several thousand data elements requiring cataloging and cross-referencing?
- AA) data dictionary
- BB) structured analysis
- CC) data flow diagrams
- DD) automated data dictionaries
- EE) design
3Which of the following is not contained in the repository?
- AA) procedural logic
- BB) use cases
- CC) generated computer code
- DD) screen and report design
4A data flow that contains data that are used between processes is called:
- AA) internal.
- BB) derived.
- CC) base.
- DD) iterative.
5Data structures are described using ________ notation.
- AA) relational
- BB) metadatic
- CC) geometric
- DD) algebraic
6What does this symbol represent [ ]?
- AA) either/or alternative
- BB) optional
- CC) iteration
- DD) selection
7Braces { } are used to indicate:
- AA) either/or alternative.
- BB) optional.
- CC) iteration.
- DD) selection.
8Which of the following is included in a physical data structure?
- AA) codes that identify the status of a master record
- BB) expansion area for file records
- CC) the type of data structure, either for a screen or report
- DD) editing criteria for the structure
9A synonym or other name for an element is called a(n):
- AA) common element.
- BB) structural element.
- CC) attributive element.
- DD) alias.
10A base element is one that:
- AA) was initially keyed into the system.
- BB) does not change over a period of time.
- CC) is used within one and only one subsystem.
- DD) is the result of a calculation or some other logic.
11A derived element is one that:
- AA) is keyed, derived by the users.
- BB) has several different meanings, one for each user group
- CC) is created by processes as a result of calculations or a series of decision-making statements.
- DD) has the displayed length and the stored length the same.
12When determining the length for elements:
- AA) look at what the current length of data is and use that value
- BB) use values that other corporations have for similar elements.
- CC) figure the amount of a numeric element and add a few characters for reasonable expansion.
- DD) keep the value for the length small to save file space.
13The symbol X(8) represents:
- AA) eight digits
- BB) eight alphanumeric characters.
- CC) a data structure or element that repeats eight times.
- DD) an element that is found within eight data structures.
14A varchar data type:
- AA) is used to represent elements for which the analyst needs to determine the length.
- BB) is an element that contains a check digit.
- CC) is used to represent a floating point number with an indeterminate number of decimal
positions. - DD) is used for data that can contain any number of characters (up to the database limit).
15A default value on a GUI screen may be used for:
- AA) drop-down lists.
- BB) radio buttons.
- CC) check boxes.
- DD) All of the above.
16Data stores are used to store:
- AA) all base elements and some derived elements.
- BB) all derived elements and some base elements.
- CC) all base and derived elements.
- DD) only some base elements and some derived elements (the most critical ones in the system).
17 Since a single data flow may only show part of the collective data,
- AA) the data store may be linked to several external structures defining the different data flows.
- BB) many data flows may have to be examined to determine the contents of a data store.
- CC) data stores must contain multiple redundant elements within repeating groups indicated by
braces {}. - DD) an alias must be used.
18An analyst may develop the data flow diagram using a top-down method by using:
- AA) algebraic notation.
- BB) structural records
- CC) algebraic notation and structural records.
- DD) vertical expansion methodology.
19The data dictionary may be used to create:
- AA) screens.
- BB) reports.
- CC) forms.
- DD) All of the above.
20Which of the following is a flaw in the system design that is detected by analyzing the data
dictionary entries?- AA) All derived elements on an output flow must be present on an input data flow.
- BB) The data store may contain elements that are not present on any data flow to or from the
data store. - CC) All base elements on an output data flow must be present on a data flow into the process.
- DD) All elements that are discrete must have a table of codes definition.
21Elements on a data flow going into or out from a data store:
- AA) must be created by the process linking to the data store.
- BB) must be base elements.
- CC) must be on a data flow that is input to the process that creates the output that is going to
the data store. - DD) must be contained by the data store.
22What is not a characteristic of the ideal data dictionary?
- AA) automated
- BB) efficient
- CC) interactive
- DD) online
- EE) evolutionary
23Which of the following may be created by transforming an XML document?
- AA) a Web page
- BB) a portable document format (PDF) file
- CC) output for a handheld device
- DD) All of the above.
24Which of the following is not included in an XML document type definition?
- AA) the number of times an element repeats
- BB) an element that is optional
- CC) the rules for transforming the XML document into standard output
- DD) the attributes of an XML element
25Which of the following is a more precise way to define the content of an XML document?
- AA) a schema
- BB) a document attribute list
- CC) an ID REF, listing the identifiable elements of a document
- DD) an XML repository specifications document
26A(n) ________ is a synonym or another name for the element, used by different users of
systems- AA) alias
- BB) schema
- CC) alert
- DD) varchar
27 A ________ is a large collection of information that is larger than a data dictionary.
- AA) repository
- BB) schema
- CC) data element
- DD) data alias
28 ________ is usually the first component to be stored in the data dictionary.
- AA) Data flow
- BB) Data direction
- CC) Data mining
- DD) Database schema
29 A ________ is composed of related elements.
- AA) data structure
- BB) data alias
- CC) database schema
- DD) data flow
30A ________ is one that is contained within a larger data structure and consists of further
subdivisions.- AA) structural record
- BB) transactional record
- CC) data alias
- DD) schema
31 ________ data structures include additional elements necessary for implementing the
system.- AA) Physical
- BB) Logical
- CC) Informational
- DD) Logistical
32A data type of ________ is used for elements that can contain any number of characters up to the limit set by the database software.
- AA) char
- BB) numeric
- CC) varchar
- DD) text
33The correct determination of a(n) ________ length is important to avoid truncation.
- AA) address
- BB) zip code
- CC) database
- DD) element
34A(n) ________ value for an element is one that has certain fixed values.
- AA) absolute
- BB) discrete
- CC) variable
- DD) continuous
35A(n) ________ element is one that has a smooth range of values.
- AA) absolute
- BB) discrete
- CC) variable
- DD) continuous
36The data dictionary is a reference work of data about data.
- AVerdadero
- BFalso
37Data about data is called metadata.
- AVerdadero
- BFalso
38The data dictionary can be used as a starting point for creating XML documents.
- AVerdadero
- BFalso
39Automated data dictionaries are useful for only printing summary lists of data.
- AVerdadero
- BFalso
40A data dictionary contains information about a data flow diagram, but not entities or use cases.
- AVerdadero
- BFalso
41 Databases are usually the first component of a data dictionary to be defined.
- AVerdadero
- BFalso
42An internal data flow is one that connects two processes.
- AVerdadero
- BFalso
43 Data structures are usually described using a binary notation
- AVerdadero
- BFalso
44An alias for each element is another name for the data used by different users in different
systems.- AVerdadero
- BFalso
45Brackets [ ] represent repetitive elements.
- AVerdadero
- BFalso
46Parenthesis represent an optional element in the data dictionary.
- AVerdadero
- BFalso
47Data structures are those data items within the system that are not meaningful if broken
down further.- AVerdadero
- BFalso
48A default value is one that never changes on a report.
- AVerdadero
- BFalso
49A discrete data element is one that has certain fixed values.
- AVerdadero
- BFalso
50When a V is used as a formatting character for an element, it indicates where the decimal point should occur, even though the actual decimal point is not included.
- AVerdadero
- BFalso
51All derived elements must be stored on a data store.
- AVerdadero
- BFalso
52Each level of a data flow diagram should use data appropriate for the level.
- AVerdadero
- BFalso
53The ideal data dictionary is automated, interactive, online, and evolutionary.
- AVerdadero
- BFalso
54The data dictionary may be used to generate computer source code.
- AVerdadero
- BFalso
55One of the rules for analyzing a data dictionary is that elements present on a data flow coming or going to a data store must be contained within the data store.
- AVerdadero
- BFalso
56Extensible markup language (XML) is a language that can be used to exchange data
between businesses.- AVerdadero
- BFalso
57 XML is used when other systems or external organizations use the same software.
- AVerdadero
- BFalso
58 XML is a way to define, sort, filter and translate data into a universal data language.
- AVerdadero
- BFalso
59In XML, tags become the metadata.
- AVerdadero
- BFalso
60An XML schema is a more precise way to define the content of an XML document.
- AVerdadero
- BFalso
61A constant value for an element is one that is automatically displayed on a screen to reduce
the amount of keystrokes the user must make.- AVerdadero
- BFalso
62All default elements on an output data flow must be present on a data flow coming into the process.
- AVerdadero
- BFalso
63A derived element must be output from at least one process that it is not input to.
- AVerdadero
- BFalso
64The data structure and elements are commonly used to generate computer source code.
- AVerdadero
- BFalso
65Unified modeling language (UML) is a language that can be used to exchange data between
businesses.- AVerdadero
- BFalso
66XML is used when users have different computer (systems) and software.
- AVerdadero
- BFalso
67XML is a way to define, sort, filter and translate data into a universal data language.
- AVerdadero
- BFalso
68In XML, schemas become the metadata.
- AVerdadero
- BFalso
69A document type definition is used to determine if the XML document content is valid.
- AVerdadero
- BFalso
70An !ATTLIST describes an XML attribute in the DTD.
- AVerdadero
- BFalso
71A schema is a more precise way to define the content of an XML document.
- AVerdadero
- BFalso
72The advantage of using XML to define data is that, in the XML format, data are stored in a pure text format and not dependent on any proprietary software.
- AVerdadero
- BFalso
73There are three standard formats for mainframe computers: zoned decimal, packed
decimal, and binary.- AVerdadero
- BFalso
74A zoned decimal is used to determine whether the XML document content is valid, that is,
whether it conforms to the order and type of data that must be present in the document.- AVerdadero
- BFalso
75The packed decimal format is commonly used to save space on file layouts and for elements
that require a high level of arithmetic to be performed on them.- AVerdadero
- BFalso
Información
- Descripción
- Quiz CIS 3343 Test sobre Chapter 8, creado por . . el 13/02/2016.
- Autor
- . .
- Idioma
- English
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