Composite and Simple Attributes: Attributes are classified as simple or composite. A composite attribute is an attribute that can be further subdivided to yield additional attributes.
Which attribute can be further divided?
Simple Attribute & Composite Attribute
If it cannot be further divided it is a simple attribute and if can be further divided it is a composite attribute. A simple attribute contains an atomic value which cannot be further divided. It is simply represented by an oval.
What is an attribute that Cannot be further subdivided to produce meaningful components?
| Term binary relationship Definition An ER term used to describe an association (relationship) between two entities. Example: PROFESSOR teaches COURSE | Term simple attribute Definition An attribute that cannot be subdivided into meaningful components. Compare to composite attribute. |
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Which of the following attribute can be further divided into sub parts?
Explanation: Composite attributes are the ones which can be further divided into other attributes whereas simple attributes cannot be divided into other attributes.
Which type of attribute Cannot be subdivided?
Attributes that cannot be subdivided are called simple attributes . First Name and Last Name are now simple attributes. Most attributes have only a single value and as such are called single valued attributes.
What is attribute example?
In general, an attribute is a property or characteristic . Color, for example, is an attribute of your hair. In using or programming computers, an attribute is a changeable property or characteristic of some component of a program that can be set to different values.
What are the types of attribute?
Attributes can also be subdivided into another set of attributes. There are five such types of attributes: Simple, Composite, Single-valued, Multi-valued, and Derived attribute .
Can be further subdivided to yield additional attributes?
A simple attribute cannot be subdivided. A composite attribute can be further subdivided to yield additional attributes.
Are underlined in an ER diagram?
Entity: Rectangles are used to represent the entity in the diagram. Name of the Entity is written inside the rectangle. ... Primary Key: An underline to the attribute name is put to represent the primary key. The key attribute of the weak entity is represented by dashed underline.
What is a table that contains a repeating group called?
A relational table is always in 1NF. Each column of a row has a single value of the column’s type. A non-relational database is “normalized” to tables ie 1NF (first sense of “normalized”) which gets rid of repeating groups.
What is a stored attribute?
Stored attribute is an attribute which are physically stored in the database. Assume a table called as student. There are attributes such as student_id, name, roll_no, course_Id. We cannot derive value of these attribute using other attributes. So, these attributes are called as stored attribute.
Which of the following is an example for multi valued attribute?
A multivalued attribute can have more than one value at a time for an attribute. For ex., the skills of a surgeon is a multivalued attribute since a surgeon can have more than one skill. Another common example is the address field , which can have multiple values like zipcode, street address, state, etc.
What is a key attribute?
Definition(s): A distinct characteristic of an object often specified in terms of their physical traits , such as size, shape, weight, and color, etc., for real -world objects. Objects in cyberspace might have attributes describing size, type of encoding, network address, etc.
What is a simple attribute?
Simple attribute − Simple attributes are atomic values, which cannot be divided further . For example, a student’s phone number is an atomic value of 10 digits. Composite attribute − Composite attributes are made of more than one simple attribute. For example, a student’s complete name may have first_name and last_name.
Which is the single valued attribute?
Answer: The attributes that can have only one value for a given entity are called the single-valued attributes. For example, the attribute Book_title is a single-valued attribute as one book can have only one title. The attributes that can have multiple values for a given entity are called multi-valued attributes.
Is name a multivalued attribute?
A multivalued attribute of an entity is an attribute that can have more than one value associated with the key of the entity . ... In this case, division or division-name would be classified as a multivalued attribute of the Company entity (and its key, company-name).
