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What is simple and composite attribute?
the term composite identifier
What is a complex attribute?
A Complex attribute that is both Composite and Multi valued. Composite and Multivalued attributes can be nested arbitrarily to form a Complex attribute like Address.
What is TOPSIS method in Multi-criteria Decision making?
it stand for Technique For Order preference BY Similarity to Ideal Situation The principle behind TOPSIS is simple: The chosen alternative should be as close to the ideal solution as possible and as far from the negative-ideal solution as possible. The ideal solution is formed as a composite of the best performance values exhibited (in the decision matrix) by any alternative for each attribute. The negative-ideal solution is the composite of the worst performance values. Proximity to each of these performance poles is measured in the Euclidean sense (e.g., square root of the sum of the squared distances along each axis in the "attribute space"), with optional weighting of each attribute.
What is the prime attribute in a database?
It is an attribute that does not occur in some candidate key.
Non-prime attribute in DBMS?
Prime attribute are part of any candidate key. Non-prime attribute are not part of any candidate key.
What is complex attribute in dbms?
Complex Attribute: A complex attribute is an attribute that is both composite and multivalued.
What is simple and composite attribute?
the term composite identifier
What is composite attribute?
An attribute that can be broken down into component parts.
What is a complex attribute?
A Complex attribute that is both Composite and Multi valued. Composite and Multivalued attributes can be nested arbitrarily to form a Complex attribute like Address.
Discuss the difference between a composite key and a composite attribute.How would each be indicated in an ERD?
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.
What is a Composite attribute relating to database?
A composite attribute in a database is an attribute that can be divided into smaller sub-parts, each representing a distinct property. Instead of storing it as a single value, a composite attribute is broken down into its components to improve data organization and accuracy. This approach helps in reducing redundancy and ensures data integrity within the database.
What are some examples of a composite attribute?
A composite attribute consists of a group of values from more than one domain. For example, the Address attribute consists of several domains such as house number, street number, city, country, etc.
What is the primary attribute of composite numbers?
They have more than two factors.
Do non integral prime numbers exist?
No. The attribute "prime" and "composite" applies only to integers.
Does a composite index have more than one attribute?
It can but it need not. It could have more than one components.
What is an attribute and how many types?
An attribute in the database terms is called as fields. A group of fields is known as a record or tuple. Attributes can be either simple or composite and single or multi-valued .
What are key attribute and non key attribute?
Attributes can be classified as identifiers or descriptors. Identifiers, more commonly called keys or key attributes uniquely identify an instance of an entity. If such an attribute doesn't exist naturally, a new attribute is defined for that purpose, for example an ID number or code. A descriptor describes a non-unique characteristic of an entity instance. An entity usually has an attribute whose values are distinct for each individual entity. This attribute uniquely identifies the individual entity. Such an attribute is called a key attribute. For example, in the Employee entity type, EmpNo is the key attribute since no two employees can have same employee number. Similarly, for Product entity type, ProdId is the key attribute. There may be a case when one single attribute is not sufficient to identify entities. Then a combination of attributes can solve this purpose. We can form a group of more than one attribute and use this combination as a key attribute. That is known as a composite key attribute. When identifying attributes of entities, identifying key attribute is very important.
