Homework Answers
In a data flow diagram represents , a square represents an internal entity
Answer : False , External Entity is shown as a square. An external entity can be a person, system, or application. It’s where data starts or ends
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In a data flow diagram (DFD), a data flow symbol shown below represents a pathway for...
QUESTION 6 10 points Which data flow diagram shows what activities the system is performing without...
QUESTION 6 10 points Which data flow diagram shows what activities the system is performing without having to specify how, wbere, or by whom the activities are accomplished? a context diagram b. logical data flow diagram c systems flowchart od physical data flow diagram 10 points QUESTION 7 Information processing activities include: a operational activities b. only automated activities c. activities that retrieve, transform, and file data d the sending of data between entities 10 points QUESTION B Data flow...
QUESTION 4 In a data flow diagram (DFD), a gray hole is a process that...
QUESTION 4 In a data flow diagram (DFD), a gray hole is a process that has _____. a. no output b. at least one input and one output, but the input obviously is insufficient to generate the output shown c. no input d. at least one output and one input, but the output obviously is insufficient to generate the input shown
Create a DFD diagram 0, and Data dictionary for the information system at a typical library....
Create a DFD diagram 0, and Data dictionary for the information system at a typical library. Create a solution as realistic as possible. Data dictionary should contain information about all data elements. In your solution include at least: - 10 processes, - 3 data stores, - 3 external entity instructions: don't use any online diagram or copy paste from internet. Do your own
The following is a jumbled list of the activities suggested in this text for drafting data...
The following is a jumbled list of the activities suggested in this text for drafting data flow diagrams (DFDs) for an existing system II. Prepare a table of entities and activities. Prepare an annotated table of entities and activities Draw a physical data flow diagram Draw a logical data flow diagram. Draw a context diagram. IV. V. The best sequence for undertaking these activities is: a. I, V, III, II, IV b. II, I, III, V, IV C. II, IV,...
QUESTION 8 For the circuit shown below, what is the current through the 200 Q resistor,...
QUESTION 8 For the circuit shown below, what is the current through the 200 Q resistor, in units of amperes? give the answer as a positive value 2 points Save Answer 尺 50Ω 1002 10v 40V R's 2000 2 points QUESTION 9 A student has to calculate the currents in the circuit shown in the diagram. After he chooses the current the following is a correct equation for this loop? ts in the circuit shown in the diagram. After he...
QUESTION 2 Label the parts of the diagram below: F А E В D CA B...
QUESTION 2 Label the parts of the diagram below: F А E В D CA B е с 1. glomerulus II. proximal tubule III. collecting duct IV. Bowman's capsule V. distal tubule OD CE F VI. Loop of Henle QUESTION 3 0.5 pois The structural unit shown in the diagram in question 2 is called the allorant atarina Click Save and Submit to save and submit. Click Save All Answers to save all answers Save All Answers QUESTION 3 OOO...
According to the system description below, draw a Data Flow Diagram (DFD). As one of our...
According to the system description below, draw a Data Flow Diagram (DFD). As one of our project topic is e-commerce platform, suppose we are developing one with the following functions: Login Validation: A user first inputs a username and password to the system for validation. The system will retrieve the username from the list of user names and associated passwords. If either the input username or password is wrong, the system will return a message to the user and stay...
true or false ? transfusion with hiv-contaminated blood is no longer a significant source or hiv infection in the Unite...
true or false ? transfusion with hiv-contaminated blood is no
longer a significant source or hiv infection in the United
states
1:11 PM QUESTION 2 True or False? Transfusion with HIV-contaminated blood is no longer a significant source of HIV infection in the United States True O False QUESTION 3 HIV is what type of virus that uses RNA as its genetic material instead of the more usual DNA? Path: p Words 0 QUESTION 4 The HIlV virus can be...
slope coefficient QUESTION 7 and SRS sampling are best when relatively complete lists of population elements...
slope coefficient QUESTION 7 and SRS sampling are best when relatively complete lists of population elements and strata sizes are known before sampling. QUESTION 8 If the data not gathered using some sort of randomizing technique, it is called QUESTION 9 In stratified sampling, the population of interest is first divided into several non-overlapping subsets called cluster. CTrue False QUESTION 10 Calibration addresses the various systematic errors that can cause an instrument's readings to be in error. True False Click...
The diagram shown below represents the mass spectrum (MS data) for which of the following compounds?...
The diagram shown below represents the mass spectrum (MS data) for which of the following compounds? 100 31 80 29 32 60 relative abundance 40 20 0 15 .. 10 20 30 mass/charge ratio (m/z) 0 40 CH3OH CH3CH3 CH3NH2 OCH3CH2NH2 CH3CH2OH
QUESTION 6 10 points Which data flow diagram shows what activities the system is performing without having to specify how, wbere, or by whom the activities are accomplished? a context diagram b. logical data flow diagram c systems flowchart od physical data flow diagram 10 points QUESTION 7 Information processing activities include: a operational activities b. only automated activities c. activities that retrieve, transform, and file data d the sending of data between entities 10 points QUESTION B Data flow...
The following is a jumbled list of the activities suggested in this text for drafting data flow diagrams (DFDs) for an existing system II. Prepare a table of entities and activities. Prepare an annotated table of entities and activities Draw a physical data flow diagram Draw a logical data flow diagram. Draw a context diagram. IV. V. The best sequence for undertaking these activities is: a. I, V, III, II, IV b. II, I, III, V, IV C. II, IV,...
QUESTION 8 For the circuit shown below, what is the current through the 200 Q resistor, in units of amperes? give the answer as a positive value 2 points Save Answer 尺 50Ω 1002 10v 40V R's 2000 2 points QUESTION 9 A student has to calculate the currents in the circuit shown in the diagram. After he chooses the current the following is a correct equation for this loop? ts in the circuit shown in the diagram. After he...
QUESTION 2 Label the parts of the diagram below: F А E В D CA B е с 1. glomerulus II. proximal tubule III. collecting duct IV. Bowman's capsule V. distal tubule OD CE F VI. Loop of Henle QUESTION 3 0.5 pois The structural unit shown in the diagram in question 2 is called the allorant atarina Click Save and Submit to save and submit. Click Save All Answers to save all answers Save All Answers QUESTION 3 OOO...
According to the system description below, draw a Data Flow Diagram (DFD). As one of our project topic is e-commerce platform, suppose we are developing one with the following functions: Login Validation: A user first inputs a username and password to the system for validation. The system will retrieve the username from the list of user names and associated passwords. If either the input username or password is wrong, the system will return a message to the user and stay...
true or false ? transfusion with hiv-contaminated blood is no
longer a significant source or hiv infection in the United
states
1:11 PM QUESTION 2 True or False? Transfusion with HIV-contaminated blood is no longer a significant source of HIV infection in the United States True O False QUESTION 3 HIV is what type of virus that uses RNA as its genetic material instead of the more usual DNA? Path: p Words 0 QUESTION 4 The HIlV virus can be...
slope coefficient QUESTION 7 and SRS sampling are best when relatively complete lists of population elements and strata sizes are known before sampling. QUESTION 8 If the data not gathered using some sort of randomizing technique, it is called QUESTION 9 In stratified sampling, the population of interest is first divided into several non-overlapping subsets called cluster. CTrue False QUESTION 10 Calibration addresses the various systematic errors that can cause an instrument's readings to be in error. True False Click...
The diagram shown below represents the mass spectrum (MS data) for which of the following compounds? 100 31 80 29 32 60 relative abundance 40 20 0 15 .. 10 20 30 mass/charge ratio (m/z) 0 40 CH3OH CH3CH3 CH3NH2 OCH3CH2NH2 CH3CH2OH
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