What is a logical data flow diagram

Assignment Help Software Engineering

Reference no: EM131357047

1. Why do we need to document an Information System?

2. What is a physical data flow diagram (DFD)?

3. What is a logical data flow diagram (DFD)?

4. Describe the symbols used in constructing data flow diagrams.

Reference no: EM131357047

Questions Cloud

What would you predict for sales : This equation indicates that last month's sales and the current month's price are explanatory variables. The last term, et, is an error term - If the price of a portrait during month 21 is $10, what would you predict for sales in month 21?

What is the difference between a hot site and a cold site : What are the control plans for restricting access to computer facilities? What three "layers" of control do these plans represent? Explain each layer.

Estimate of the parameters for this year : Brown's, a local bakery, is worried about increased costs-particularly energy. Last year's records can provide a fairly good estimate of the parameters for this year

Discuss three levels of interorganizational relationships : Discuss three levels of interorganizational relationships. Explain why these levels are important. Discuss differences in exchange of information for the three levels.

What is a logical data flow diagram : Why do we need to document an Information System?- What is a physical data flow diagram (DFD)?- What is a logical data flow diagram (DFD)?

Similarities and differences between a systems flowchart : What is the difference between a context diagram, a logical DFD, and a physical DFD?- What is a systems flowchart?

What are business applications of near field communication : What are the business applications of near field communication (NFC)? Discuss the changes in the business environment brought about by technology in the last five years.

Determine interconnectivity the four it business management : Distributed computing sent shock waves through IT and system management from which IT has yet to fully recover. Industry analysts, system management vendors, niche vendors, and IT management all have perspectives on partial solutions, but none of ..

Describe the symbols used in constructing e r diagrams : What is an E-R diagram?- Describe the symbols used in constructing E-R diagrams.- What is a table of entities and activities?

User Account

All Pages