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A relationship between the instances of a single entity type is called a ........................?
A relationship between instances of a single entity type is called a self-relationship or recursive relationship. This type of relationship occurs when an entity is related to other instances of the same entity type within the same entity set.
What is collectivity give an example?
Collectivity refers to a group or collective entity that has shared goals, interests, or characteristics. An example of collectivity is a community coming together to support a local charity event or a group of coworkers collaborating on a project at work.
Is the 4-h headquarters a private entity?
The 4-H headquarters is operated by the National Institute of Food and Agriculture (NIFA), which is a federal agency within the United States Department of Agriculture (USDA). While it is government-funded and affiliated with a federal agency, it is not a private entity.
What is an antonym of separate?
The antonym of separate is "unite" or "join." It refers to bringing things together or combining them into a single entity.
What do you mean when you say from whose perspective?
"When I say 'from whose perspective,' I am asking for the viewpoint or point of view of a specific person or entity in relation to a particular situation, topic, or event."
Explain child Relationships in dbms?
A child relationship refers to an entity or table that cannot exist without the existence of another entity or table. An example of this would be a table that is created to address a many-to-many relationship between two other tables.
Entity relationship model with example?
draw an er diagram on attendance management system
Can a relationship have only one participating entity?
yes. For example, only one person actually "participates" in the stalker/victim relationship.
A relationship between the instances of a single entity type is called a ........................?
A relationship between instances of a single entity type is called a self-relationship or recursive relationship. This type of relationship occurs when an entity is related to other instances of the same entity type within the same entity set.
What is total participation in database management?
Participation (or optionality) concerns the involvement of entities i a relationship. Participation is about exceptions to the rule. An entity's participation is optional if there is a least one instance of an entity which does not participate in the relationship. An entity participation is mandatory if all instances of an entity must participate in the relationship.
Entity relationship diagram of a portfolio management system?
The entity relationship diagram of a portfolio management system serves as a graphical representation of entities and their relationships to each other in a conceptual database model. In addition, a corresponding data dictionary is developed to explain these relations.
Can an identifying relationship of a weak entity type will be of a degree greater than two give example?
Sure thing, honey. An identifying relationship of a weak entity type can definitely have a degree greater than two. For example, let's say we have a weak entity type called "Order Item" that depends on both "Order" and "Product" entities to uniquely identify it. In this case, the identifying relationship would have a degree of two (connecting "Order" and "Product") but the weak entity type itself would have a degree of three. Hope that clears things up for ya!
Full form of eer model?
ENHANCED ENTITY RELATIONSHIP OR EXTENDED ENTITY RELATIONSHIP
What is meaning of entity explain with example?
An entity refers to a distinct object or concept that can be identified and defined within a given context. In databases, for example, an entity might represent a person, organization, or product, each with specific attributes. For instance, in a customer database, "Customer" is an entity, and its attributes could include name, email, and phone number. This allows for structured data management and retrieval based on the characteristics of the entity.
Entity Relationship diagram for Hotel Reservation System?
An entity relationship diagram for hotel reservation systems is a map of each entity or thing that has a part in the process of hotel reservations. The diagram maps the relationship between each entity of the process.
What occurs when a weak entity does not have a candidate key and its instances are indistinguishable without a relationship with another entity?
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.
What is entity relationship diagrame?
An entity relationship diagram (ERD) represents the entities, or groups of information, and their relationships maintained for a business. An entity relationship diagram represents the entities, or groups of information, and their relationships maintained for a business. An entity relationship diagram represents the entities, or groups of information, and their relationships maintained for a business.
