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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.
What else can I help you with?
What is a ledger in regards to accounting?
It is a complete set of accounts for a business entity
What is the difference between disbursement and reimbursement?
The difference between disbursement and reimbursement is that with reimbursement a person is getting back every cent they paid in. Disbursement is a set amount or percentage of money paid in.
What is the difference between a partnership and an operating agreement?
The difference between a partnership agreement and an operating agreement is that in the partnership agreement is set up for all owners or partners to be responsible for the company. The operating agreements differs in the fact that the agreement is for the person or people in charge of the operating requirements for the company.
What is the difference between charity and foundation?
Charities are organizations set up to aid those in need. Foundations might be considered as organizations that engage in funding different organizations such as charities.
What is the difference between overhead and GA?
The difference between Overhead & G&A is as follows: Overhead is always a fixed cost...such as rent. G&A (Stands for General and Administrative) so therefore all general and administrative costs go here....such a supervisor salary. G&A can have cost controls implemented into them...the fixed costs are set (usually in stone). http://www.xsellence.com
Difference between entity and entity set?
Entity - Table Entity Set - Rows in Table
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 an extension of an entity type?
its an set of entity
What is entity classes?
same as entity class or entity type or entity set
Explain the difference between a weak and a strong entity set?
An entity set that does not possess sufficient attributes to form a primary key is called a weak entity set. One that does have a primary key is called a strong entity set. The discriminator (or partial key) of a weak entity set is the set of attributes that distinguishes among all the entities of a weak entity set The existence of a weak entity set depends on the existence of a identifying entity set. It must relate to the identifying entity set via a total, one-to-many relationship set from the identifying to the weak entity set We depict a weak entity set by double rectangles in E-R diagram. We underline the discriminator of a weak entity set with a dashed line in E-R diagram.
Diffentiate between an entity and an entity set?
What do you mean by referral integrity constraints ?
What is the difference between insured and insurer?
The insured is the person or entity who is covered by the insurance policy. The insurer is the entity (insurance company)that pays to, or on behalf, of the insured for a covered loss. That which is covered by the policy is set forth in the insurance policy.
Can weak entity be converted into strong entity in DBMS?
A weak entity set can always be make into strong entity set by adding to its attribute of its identifying entity set. For a weak entity set, we add columns to the table corresponding to the primary key of the strong entity set on which the weak set is dependent.
Define entity sets in dbms?
entity is a thing in the real world with an independent existance. and entity set is collection or set all entities of a particular entity type at any point of time. take an example: a company have many employees ,and these employees are defined as entities(e1,e2,e3....) and all these entities having same attributes are defined under ENTITY TYPE employee.and set{e1,e2,.....} is called entity set. we can also understand this by an anology . entity type is like fruit which is a class .we havn't seen any "fruit"yet though we have seen instance of fruit like "apple ,banana,mango etc.hence.. fruit=entity type=EMPLOYEE apple=entity=e1 or e2 or e3 enity set= bucket of apple,banana ,mango etc={e1,e2......}
What is strong and weak entity set?
the enitity which is set primary key is said to be strong entity and the entity which does not set primary key is said to be weak entity.
Can weak entity be converted into strong entity?
The primary key of a weak entity set is formed by taking the primary key of the strong entity set on which its existence depends (see Mapping Constraints) plus its discriminator. A strong entity set has a primary key. All tuples in the set are distinguishable by that key. A weak entity set has no primary key unless attributes of the strong entity set on which it depends are included. Tuples (a particular row) in a weak entity set are partitioned according to their relationship with tuples in a strong entity set. Tuples within each partition are distinguishable by a discriminator, which is a set of attributes.
What is the difference between an accredited investor and a qualified purchaser?
An accredited investor is an individual or entity that meets certain income or net worth requirements set by the Securities and Exchange Commission (SEC) to participate in certain investment opportunities. A qualified purchaser, on the other hand, is an individual or entity that meets higher financial thresholds set by the Investment Company Act of 1940 to invest in certain types of private investment funds. In summary, the main difference is in the specific criteria and regulations that define each type of investor.
