What are entity-relationship diagrams

Assignment Help Basic Computer Science

Reference no: EM131370297

1. Describe a primary key, candidate key, secondary key, foreign key, and a combination key. Use your imagination to provide an example of each key that is not in the textbook.

2. What are entity-relationship diagrams and how are they used? What symbol is used for a relationship? What is an associative entity? Provide an example.

Reference no: EM131370297

Questions Cloud

Write the difference between plagiarizing and paraphrasing : Write the difference between plagiarizing and paraphrasing.- A good writer is one you can read without breaking a sweat.

Design a data entry screen for entering new members : Design a screen for managers, with weekly and monthly data on rentals, new customers, late charges, and anything else you think a store manager might want to review. Be sure to include numeric activity and dollar totals.

Illustrate comprehension-critical-thought : For this activity, address each of the five questions that correspond with this activity. Responses should be succinct, but detailed enough to illustrate comprehension, critical-thought, and appropriateness. Submit your paper using APA format.

Evaluate type of employee testing that companies may require : Evaluate the types of employee testing that companies may require that are discussed in the text. Determine the two tests that you consider the most important. Support your reasoning.

What are entity-relationship diagrams : What are entity-relationship diagrams and how are they used? What symbol is used for a relationship? What is an associative entity? Provide an example.

How safety management and human resource management : Discuss how safety management and human resource management can collaborate to address labor-related laws and requirements.

Explain how academic knowledge impacts the social elements : GEN 499 : Research the responsibility of a critical thinker in a contemporary society. You may choose any topic that deals with a contemporary social concern. Examine the principles of critical thought in relation to the chosen societal concern, a..

Regulation between us and eu : Discuss what OS&H practices in EU and in US could bring to each other and what could be limits of a harmonized OS&H regulation between US and EU.

Interdependence that operations finance and marketing : Compare and contrast an existing organization's three major functions (i.e., finance, marketing, and operations), and then justify the interdependence that operations have to finance and marketing. Provide examples to support your rationale.

User Account

All Pages