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Draw an ER diagram that shows the organization of a simple student database. The database captures the information about letter grades obtained by university students who enrolled in some sections of courses taught by some professors. In the database, each student is represented by a student ID and student name. Each course is represented by a course ID, a course name, and the number of credits assigned to the course; each section of a course is represented by a section ID (e.g., section "A01" of the 3-credit course "COMP 3380" named "Database concepts and usage").
Each professor is represented by the ID, name, office number and email address of the professor. Here, we assume that
(a) a student cannot repeat any courses,
(b) a student may take different sections of a course (e.g., COMP 4060 A03 and A08), and
(c) each course section is taught by one professor. Hint: Make sure you clearly identify the primary key of each entity set, the mapping cardinality of each relationship set, and also explicitly state the primary key of each relationship set.
Entities Let us first be aware of the question: What are entities? An entity is an object of concern used to show the things in the actual world, e.g., table, car, bo
A use case diagram giving a pictorial overview of user requirements and brief use case descriptions. As the case study contains only an outline of a business scenario, you will als
What is an object ID? Each class-derived table has an ID for primary key, one or more object IDs form primary key for association derived tables. An object ID is equivalent dat
Differance between Open addressing and chaining for collision resolution ? In open addressing , proceeding from the occupied position specified by hash address the program che
complete er diagram of textile industry management
What is Normalization? Database normalization is a data design and organization method applied to data structures based on rules that help building relational databases. In rel
The ER diagram clearly showing the additional tables you have implemented. SQL table creation scripts for the tables you have set up. SQL scripts showing the sample data you
What is a virtual table that draws its data from the result of an SQL SELECT statement? View is a virtual table that draws its data from the result of an SQL SELECT statement.
Draw an Entity-Relationship model for the relational schema given in the Appendix. Show all the entities, relationships, relationship names, and attributes and also underline the
NEED FOR A DATABASE MANAGEMENT SYSTEM A Database is a structured, persistent collection of data of an organisation. The database management system (DBMS) manages the database o
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