0
Discuss the difference between a composite key and a composite attribute.How would each be indicated in an ERD?
Wiki User
∙ 14y ago
Attribute is the property of entity.The composite attribute is like address(where street no,house no,town name all include).Composite key is also an attribute,but only which attribute are work as a unique identifier. Example:> In an ERD if vendor placed with orders then order(order day, order number) vendor(vendor code,vendor address) Here, order and vendor both are entity and order number, vendor code both are Composite key(because those are unique)but vendor address is a Composite attribute and order day(may be not unique)is an attribute only. So, we can conclude that all attribute not Composite key.
Wiki User
∙ 14y ago
A composite key is a combination of two or more attributes that uniquely identifies a record in a database table, while a composite attribute is an attribute that can be further divided into sub-parts with distinct meanings. In an ERD, a composite key is indicated by underlining the combined attributes, while a composite attribute is shown by drawing it as a nested structure within its containing entity.
Add your answer:
Earn +20 pts
What is difference between seminar and presentation?
A seminar is a meeting or conference where experts discuss a specific topic in detail, often involving audience participation. A presentation, on the other hand, is a formal talk given by an individual or group to convey information or persuade an audience. In a seminar, there tends to be more interaction and dialogue, while a presentation is typically a one-way communication.
What are the best topics to discuSS ON INFORMATION TECHNOLOGY?
Some good topics to discuss in information technology include cybersecurity, artificial intelligence, cloud computing, blockchain technology, and Internet of Things (IoT). These are all areas that are constantly evolving and have significant impact on the industry.
What is a good topic for a speech of presentation?
A good topic for a speech of presentation could be "The Impact of Technology on Society," as it allows you to discuss various aspects of technology such as communication, education, and economy, and how they shape our daily lives.
Briefly discuss the accessible characterstics of valuable information?
Valuable information is accurate, relevant, timely, and complete. It should be easy to understand and access, as well as reliable and trustworthy. Additionally, valuable information is actionable and helps improve decision-making.
What is the purpose of the conclusion in a research report?
The purpose of the conclusion in a research report is to summarize the key findings of the study, restate the research question or hypothesis, and discuss the implications of the results. It provides a final opportunity to give closure to the study and highlight its significance.
What are the characteristic differences between Rhombus?
You need two things before you can discuss difference between them!You need two things before you can discuss difference between them!You need two things before you can discuss difference between them!You need two things before you can discuss difference between them!
What is the difference between describe and discuss?
To describe is to provide details or characteristics of something, while to discuss is to talk about it by examining different viewpoints, arguments, or implications. Describing focuses on providing information, whereas discussing involves analyzing, evaluating, and exchanging ideas.
Difference between Discussion and discuss?
"Discussion" is a noun that refers to the act of talking about a topic or issue. "Discuss" is a verb that means to talk about something in detail. In other words, a discussion is the actual conversation, while to discuss is the action of having that conversation.
What is the difference between analysis and discussion in a research?
explain discuss
Source of rural credit?
discuss the difference sources of rural credit
Discuss the difference between economics and natural science?
i want to know the difference between economics and natural sciences
What are the difference between managerial and non managerial levels?
Discuss the difference between managerial and non managerial tasks?
Is there a difference between a date and hanging out?
...sex should be the difference...and the topic u shall discuss will also depend
Explain the different functions of an operating system and discuss some ways that operating systems can differ from one another?
discuss the difference function of an operating system
Discuss the difference between the Prototype model and the Meta model?
haha no1 knows
A Discuss the difference and similarities between embedded systems and general purpose workstations?
inside my dreams
Discuss the similarities and difference between arbitration and judicial hearings?
Committee chairpersons decide if a bill will get a hearing or not.
