weak entity
When the primary key (PK) of one entity does not contain the primary key of a related entity, the relationship is typically a "one-to-many" or "many-to-many" relationship. In this scenario, the primary key of the first entity can exist independently of the second entity, indicating that multiple instances of the related entity can correspond to a single instance of the first entity. This structure allows for more flexible data modeling where entities can be associated without strict dependency on each other's primary keys.
When a weak entity lacks a candidate key and its instances cannot be uniquely identified without a relationship to another entity, it relies on that relationship to establish its identity. This typically occurs in a one-to-many relationship where the weak entity’s existence is dependent on the strong entity, which provides the necessary identifying attributes. As a result, the weak entity will often include a foreign key from the related strong entity as part of its primary key. Without this relationship, instances of the weak entity would be indistinguishable and cannot be adequately represented in the database.
an entity set may not have sufficient attribute 2 form a primary key is called weak entity set.ex entity set payment has 3 attribute pay-no,pay-date, pay-amount.pay-no is a sequential no generated 4 each loan.each payment entity is distinct,payments 4 different loans may share the same payment no.thus entity set doent have a primary key,so it is a weak entity set. Placid04 bakhra,muzaffarpur,bihar.
An independent service is a service offered by an entity that operates independently from others, often focusing on providing specialized expertise or solutions without being tied to a particular brand or company. This can include consulting, freelance work, or any service where the provider maintains autonomy and can serve multiple clients or industries. Independent services are typically characterized by flexibility, personalized attention, and the ability to adapt to varying client needs.
An independent trustee is an entity who is completely independent of the parties to the trust, not a relative. For example, an accountant, attorney or the trust department of a bank would be an independent trustee.An independent trustee is an entity who is completely independent of the parties to the trust, not a relative. For example, an accountant, attorney or the trust department of a bank would be an independent trustee.An independent trustee is an entity who is completely independent of the parties to the trust, not a relative. For example, an accountant, attorney or the trust department of a bank would be an independent trustee.An independent trustee is an entity who is completely independent of the parties to the trust, not a relative. For example, an accountant, attorney or the trust department of a bank would be an independent trustee.
If an entiry is dependent on another entity in a certain way then the change in value of the dependent entity to an unit change in the value of the independent entity is the rate of change.
If an entiry is dependent on another entity in a certain way then the change in value of the dependent entity to an unit change in the value of the independent entity is the rate of change.
Ann thought that she saw a ghost entity hovering over the graveyard, but it turned out to be a flag
Entity is a noun (plural entities)and means - a thing with distinct and independent existence. Sentences: The unit has become part of a larger department and no longer exists as a separate entity. These countries can no longer be viewed as a single entity. The moon is an entity whose origin is unknown.
An entity is a thing or being with distinct and independent existence. In the context of the topic at hand, an entity could refer to a person, organization, or concept that is relevant to the discussion or subject being discussed.
lets understand them all: 1.An Entity is a real world "thing" which have independent existence. 2.Entity type is a category. 3.entity type is strictly calling, "an instance of entity type". 4.An entity type defines a collection of entities that have the same attributes. 5.Entity set : the collection of all entities of a particular entity type in the database at any point of time is called Entity set.
Entity could be anything which is perceived to have a distinct and separate existence (living or non-living). The basic object that the ER model represents is an entity. An entity is a thing in the real world with an independent existence. An entity may be an object with a physical existence or it may be an object with a conceptual existence. Each entity has attributes- the particular properties that describe it. A particular entity will have a value for each of its attributes.
The noun form of "independent" is "independence." It refers to the state of being free from outside control or influence. Another related noun is "independent," which can refer to a person or entity that operates autonomously.
Greenland is a semi-independent entity under the Danish crown, i.e. part of Denmark.
A large landmass, such as India, that is part of a continent but is considered either geographically or politically as an independent entity.
1 a : being, existence; especially :independent, separate, or self-contained existence