This week, you need to develop an Entity Relationship Diagram (ERD) for the database for Library Management System This assignment consists of three steps that should be completed by Sunday of Week 2 at 11:59 p.m., CT:
Step 1: Identify Entities
Identify the entities. These are typically the nouns and noun-phrases in the descriptive data produced in your analysis. Do not include entities that are irrelevant to your domain.
For example, in a college database project, the entity candidates are departments, chair, professor, course, and course section. Since there is only one instance of the university, we exclude it from our consideration for now.
Step 2: Find Relationships
Discover the semantic relationships between entities. In English, the verbs connect the nouns. Not all relationships are this blatant; you may have to discover some on your own. The easiest way to see all the possible relationships is to build a table with the entities across the columns, and down the rows. Then, fill in cells to indicate where relationships exist between the entities.
Step 3: Draw the ERD Blueprint
Draw the entities and relationships you have discovered. View the
. To create your ERD, the domain (or subset of a domain) that you chose for your project should include the following characteristics:
Submit your work for all three steps to this assignment. Your written work and citations should be provided in APA-format. No cover page is needed for this assignment. Click the assignment link to compare your work to the rubric before submitting it. Click the same link to submit your assignment.
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