100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
ICT Assignment 3 solution $3.92   Add to cart
Quickly navigate to
Preview
  2.  
  3. University Of South Africa (Unisa)
  4.  
  5. ICT2621 - Structured Systems Analysis And Design (ICT2621)

Other

ICT Assignment 3 solution
 97 views  9 purchases
  • Course
  • ICT2621 - Structured Systems Analysis And Design (ICT2621)
  • Institution
  • University Of South Africa (Unisa)

ICT Assignment 3 solution Questions: Question 1 NB: When drawing data flow diagrams (DFDs), use the Gane and Sarson symbols/notation set. 1.1 Draw, name and describe the four symbols used in a data flow diagram (DFD). You may use a table to present your answer. (6) 1.2 Briefly describe the ...

[Show more]

Preview 2 out of 8  pages

Document information

  • July 12, 2023
  • 8
  • 2022/2023
  • Other
  • Unknown

Subjects

  • ict2621 2023 assignment 3

Written for

  • University of South Africa (Unisa)
  • ICT2621 - Structured Systems Analysis And Design (ICT2621)
All documents for this subject (36)

Seller

avatar-seller
CrystalIndigo

Reviews received

Content preview

1.1
NAME DRAWING DESCRIPTION
PROCESS Receive input data and produce
output that has different
content, form, or both




DATA STORE Represent data that the system
stores because one or more
processes have to use data at a
later time



DATA FLOW A path for data to move from
one part of the information
system to another, it represents
one or more data items
EXTERNAL A place, person, things or event
ENTITY for which data is collected and
maintained




1.2 Levelling - Levelling involves creating a series of progressively more detailed diagrams
until all essential components are identified, aiming to achieve the desired level of detail.
Balancing - Balancing is a process that ensures consistency across a set of Data Flow Diagrams
(DFDs) by aligning input and output data flows correctly. It is applied to maintain consistency
throughout a sequence of diagrams, encompassing input and output data flows, data definition, and
process descriptions. Balancing guarantees the preservation of input and output data flows from the
parent DFD to the child DFD.
Data dictionary - A data dictionary, also known as a data repository, serves as a centralized
repository of information concerning a system's data. It is utilized by analysts to collect, document,
and organize specific details about the system, such as the contents of data flows, data stores,

, entities, and processes. Additionally, the data dictionary defines and describes all data elements and
meaningful combinations of data elements.


1.3
Spontaneous generation




Black hole




Gray hole

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller CrystalIndigo. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $3.92. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

78998 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$3.92  9x  sold
  • (0)
  Add to cart