Author Question: The data on all forms and reports must consist of data elements in data stores and on the E-R data ... (Read 262 times)

urbanoutfitters · **on:** Jul 7, 2018

The data on all forms and reports must consist of data elements in data stores and on the E-R data model for the application or else be computed from these data elements.

Indicate whether the statement is true or false

Question 2

Discuss the guidelines for drawing a DFD.

What will be an ideal response?

sierramartinez · **Reply #1 on:** Jul 7, 2018

Answer to Question 1

TRUE
Explanation: This question is consistent with the definition of a form being a business document that contains some predefined data and may include some areas where additional data are to be filled in; typically based on one database record.
CL

Answer to Question 2

The guidelines for constructing DFDs are completeness, consistency, timing considerations, the iterative nature of drawing DFDs, and drawing primitive DFDs. Completeness refers to the extent to which all necessary components of a data-flow diagram have been included and fully described. Consistency refers to the extent to which information contained on one level of a set of nested data-flow diagrams is also included on other levels. Timing is not indicated on DFDs. Iterative development recognizes that requirements determination and requirements structuring are interacting analysis sub-phases. Primitive DFDs are the lowest level of decomposition for a data-flow diagram. The analyst must make a determination of when she has reached the primitive level DFDs.
CL