What does it imply when something is referred to be a system model? What are some of the elements that must be addressed while developing core models?

For a business of your choice, use a graphics program to develop a data-flow diagram of one of its main processes and an entity-relationship diagram showing the data within the scope of the system.

A safety-critical system is one whose failure or misuse may cause human injury or death. Given that an EHR system can be considered to be such a system, which tasks associated with software implementation deserve special attention?

_______ is the process of analysing systems to make sure they are operating as intended and comparing the performance and benefits of the system as it was designed with the actual performance and benefits of the system in operation.

A new sales ordering system needs a relational database that contains a customer table, a product inventory table, and an order table. Use a word-processing, graphics, or spread-sheet program to draw an entity-relationship diagram showing the relationships among these entities. Next, design each of these tables showing the keys and attributes to be included in each table. Include five sample records for each table.

Data modelling is most often accomplished through the use of a(an) ________________. a. entity-relationship diagram b. data-flow diagram c. functional decomposition diagram d. activity diagram

You and your team have been hired to perform a system investigation for a fast food restaurant that wants to implement new tools and processes to improve its customer service. Currently, the restaurant has a poor reputation for not correctly filling customers orders and for taking too long to do it. Perform a functional decomposition to define the scope and basic requirements of such a system. Brainstorm some ideas to improve the situation, and choose one to pursue based on its technical, economic, legal, operational, and schedule feasibility.

A preliminary evaluation of software packages and vendors begins during the _____________ phase when the two or three strongest contenders are identified. a. system investigation b. system design c. system analysis d. feasibility analysis

Data modeling is most often accomplished through the use of a(n) __________________. a. entity-relationship diagram b. data-flow diagram c. functional decomposition diagram d. activity diagram

_______ is a form of testing that involves linking all of the individual components together and testing them as a group to uncover any defects between individual components. a. Unit testing b. System testing c. Integration testing d. Volume testing