Exam 5: Data and Process Modeling

MATCHING Identify the letter of the choice that best matches the phrase or definition.a.balancing f.data dictionary b.structured analysis g.decision table c.leveling h.logical d.DFD i.data flow e.physical j.record -Shows how a system transforms input data into useful information.

-The major benefit of ____ is that it gives a clear picture of current system functions before any modifications or improvements are made.

Analysts use ____________________ modeling techniques to show how a system transforms data into useful information.

An auto parts store inventory record might include ____.

Leveling ____.

In data and process modeling, a(n) ____ model shows what the system must do, regardless of how it will be implemented physically.

-To show the detail inside a black box, create DFD ____________________, which zooms in on the system and shows major processes, data flows, and data stores.

DFD symbols are referenced by using all ____ letters for the symbol name.

Another term for business logic is business ____________________.

In addition to the Gane and Sarson symbol set, another popular symbol set is ____________________.

In a DFD, the Gane and Sarson symbol for a process is a ____.

Data stores are shown in a context diagram because data stores are external to the system.

A DFD shows ____.

Using ____, an analyst starts with an overall view, which is a context diagram with a single process symbol, and then the analyst creates diagram 0, which shows more detail.

In a typical company, ____________________ might include calculating sales trends, filing online insurance claims, ordering inventory from a supplier's system, or verifying e-mail addresses for Web customers.

More complex systems have fewer processes, and analysts need only work through very few levels to identify the functional primitives.

Many systems analysts create a physical model of the current system and then develop a logical model of the current system before tackling a logical model of the new system.

-The selection structure is the completion of ____.

In addition to describing each data element, data flow, data store, record, entity, and process, the data dictionary documents the relationships among these components.

Deciding whether to explode a process further or determine that it is a functional primitive is a matter of experience, judgment, and interaction with programmers who must translate the logical design into code.