Student Information System

Topics: Data flow diagram, Flowchart, Dataflow Pages: 5 (599 words) Published: August 26, 2013
Data Flow Diagram
Context Diagram

DFD – Level 0

DFD – Level 1

Data Dictionary
Data Flow
Data Flow Name or Label | Student Number|
Alternate Name | – Student Details|
Description | Identification number of student|
Origin | External Entity - STUDENT|
Destination | PROCESS - Validate details or corrections if possible| Record | 1000 records|
Volume and Frequency | 100 transactions a month|

Data Flow
Data Flow Name or Label | Student Information|
Alternate Name| - Student Grades|
Description | Student’s information and grades|
Origin | PROCESS - Validate details or corrections if possible| Destination | External Entity – STUDENT|
Record | 1000 records|
Volume and Frequency | 100 transactions a month|

Data Flow
Data Flow Name or Label | Request Info|
Alternate Name| - Information|
Description | Student’s assessment information|
Origin | PROCESS – Input Student Information|
Destination | Data Storage – account database|
Record | 1000 records|
Volume and Frequency | 100 transactions a month|

Data Flow
Data Flow Name or Label | Requested info|
Alternate Name| - Updated Information|
Description | Updated student’s information and grades| Origin | Data Storage – account database|
Destination | PROCESS – Input Student Information|
Record | 1000 records|
Volume and Frequency | 100 transactions a month|

Data Flow
Data Flow Name or Label | Check student number|
Alternate Name| - unverified student number|
Description | Validation of student number|
Origin | PROCESS - Validate details or corrections if possible| Destination | Data Storage – user database|
Record | 1000 records|
Volume and Frequency | 100 transactions a month|

Data Flow
Data Flow Name or Label | Matched Credentials|
Alternate Name| - Verified student number|
Description | Validated student number|
Origin | Data Storage – user database|
Destination | PROCESS – Validate details or corrections if possible| Record | 1000 records|
Volume and Frequency | 100 transactions a month|

Data Flow
Data Flow Name or Label | Log-in Session ID|
Alternate Name| - Student Grades|
Description | Student’s information and grades|
Origin | PROCESS - Validate details or corrections if possible| Destination | External Entity - STUDENT|
Record | 1000 records|
Volume and Frequency | 100 transactions a month|

External Entity

External Entity Name | Student|
Alternate Name| Apprentice|
Description | enrollee, applicant|
Input Data Flows| Student information|
Output Data Flows| Student number, credentials|

Data Stores
Data store name or Label | Account Database|
Alternate Name | Student Master File|
Description | Information about the students|
Input Data Flows | Request info|
Output Data Flows | Requested info|
Record | 1000 records|
Volume and Frequency | 100 transactions a month|

Data Stores
Data store name or Label | User Database|
Alternate Name | Login Master File|
Description | Information about the student accounts|
Input Data Flows | Check student number|
Output Data Flows | Matched credentials|
Record | 1000 records|
Volume and Frequency | 100 transactions a month|

Process
Process Name or Label | Generate login form|
Purpose or Description | To enter student’s login credentials| Process no. | 1|
Input Data Flows | student number, matched credentials|
Output Data Flows | Check student number|
Process Description | Login Form|

Process
Process Name or Label | View student information|
Purpose or Description | View student’s information|
Process no. | 2|
Input Data Flows | Requested info|
Output Data Flows | Student information|
Process Description | View student’s requested information|

Process
Process Name or Label |...
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