Sad_Ch8

What is a reference work of data about data compiled by systems analysts?
A. Data dictionary
B. Data flow diagrams
C. Structured analysis
D. Design

What become(s) important for large systems that produce several thousand data elements requiring cataloging and cross-referencing?
A. Data dictionary
B. Structured analysis
C. Data flow diagrams
D. Automated data dictionaries
E. Design

Which of the following is not contained in the repository?
A. procedural logic
B. project management information
C. generated computer code
D. screen and report design

A data flow that contains data that are used between processes is called:
A. internal.
B. derived.
C. base.
D. iterative.

Data structures are described using ________ notation.
A. relational
B. metadatic
C. geometric
D. algebraic

What does the symbol [ ]represent?
A. Either/or alternative
B. Optional
C. Iteration
D. Selection

{Braces} are used to indicate:
A. either/or alternative.
B. optional.
C. iteration.
D. selection.

Which of the following is included in a physical data structure?
A. Codes that identify the status of a master record
B. Expansion area for file records
C. The type of data structure, either for a screen or report
D. Editing criteria for the structure

Which of the following entails working with the smallest meaningful components of the system?
A. Processes
B. Data flows
C. Data structure
D. Data elements

A base element is one that:
A. was initially keyed into the system.
B. does not change over a period of time.
C. is used within one and only one subsystem.
D. is the result of a calculation or some other logic.

A derived element is one that:
A. is keyed, derived by the users.
B. has several different meanings,one for each user group.
C. is created by processes as a result of calculations or logic.
D. has the displayed length and the stored length the same.

When determining the length for elements:
A. look at what the current length of data is and use that value.
B. use values that other corporations have for similar elements.
C. determine the amount of a numeric element and add a few characters for reasonable expansion.
D. keep the value for the length small to save file space.

The symbol X(8) represents:
A. eight digits.
B. eight alphanumeric characters.
C. a data structure or element that repeats eight times.
D. an element that is found within eight data structures.

Packed decimal format is used for a numeric element because:
A. the data is unreadable by the average person, and thus increases data security.
B. it increases the likelihood of containing a valid checkdigit.
C. the numeric element contains decimal points that are represented by a V on the file layout and are not actually included in the data.
D. it saves space on file layouts.

A default value on a GUI screen may be used for:
A. drop-down lists.
B. radio buttons.
C. check boxes.
D. All of the above

Data stores are used to store:
A. all base elements and some derived elements.
B. all derived elements and some base elements.
C. all base and derived elements.
D. only some base elements and some derived elements (the most critical ones in the system).

As a single data flow may only show part of the collective data,
A. the data store may be linked to several external structures defining the different data
flows.
B. many data flows may have to be examined to determine the contents of a data store.
C. data stores must contain multiple redundant elements within repeating groups indicated by {braces}
D. an alias must be used.

An analyst may develop the data flow diagram using a top-down method by using:
A. algebraic notation.
B. structural records.
C. algebraic notation and structural records.
D. vertical expansion methodology.

The rule for vertical balancing between data flow diagrams is that:
A. the data flow on a child diagram must be present within the structures or elements on the parent diagram.
B. the data flow on a parent diagram must have aliases to the child diagram.
C. the data flow into data stores on the parent diagram must be contained within repetitive child diagram structures.
D. the data flow on a parent diagram must contain all elements on a child diagram.

The data dictionary may be used to create:
A. screens.
B. reports.
C. forms.
D. All of the above

Which of the following is a flaw in the system design that is detected by analyzing the data dictionary entries?
A. All derived elements on an output flow must be present on an input data flow.
B. The data store may contain elements that are not present on any data flow to or from the data store.
C. All base elements on an output data flow must be present on a data flow into the process.
D. All elements that are discrete must have a table of codes definition.

Which of the following is a flaw in the system design that is detected by analyzing the data dictionary entries?
A. All derived elements on an output flow must be from a process that they are not input into.
B. The data store must contain elements that are not present on any data flow to or from the data store.
C. All base elements on an output data flow must be created by at least one process.
D. All elements that are discrete must have a table of codes definition.

Elements on a data flow going into or out from a data store:
A. must be created by the process linking to the data store.
B. must be base elements.
C. must be on a data flow that is input to the process that creates the output that is going to the data store
D. must be contained by the data store.

What is not a characteristic of the ideal data dictionary?
A. Automated
B. Efficient
C. Interactive
D. Online
E. Evolutionary

Automated dictionaries may serve as references for:
A. people.
B. programs.
C. aliases.
D. people and programs.

A language that can be used to exchange data between businesses is called:
A. Extensible markup language.
B. Exchange mediation language.
C. Extranet manipulative language.
D. Extended machine language.

Which of the following may be created by transforming an XML document:
A. A Web page.
B. A portable document format (PDF) file.
C. Output for a handheld device.
D. All of the above

A _____________ may be used to validate an XML document.
A. nested tag structure
B. document type definition
C. transformation filter definition
D. translation definition language