When using the arc implementation to convert a super set entity into a relation, what if the entitydoes not have a UID?A) create an artificial UID for the super entityB) create an artificial UID for the super entity and each sub type entityC) use another attribute of the super type entity as UIDD) ask the designer to provide a UID
SQL
SQL stands for Structured Query Language, is a form of communication that uses queries structured in a specific format to store, manage & retrieve data from a relational database.
Queries
A query is a type of computer programming language that is used to retrieve data from a database. Databases are useful in a variety of ways. They enable the retrieval of records or parts of records, as well as the performance of various calculations prior to displaying the results. A search query is one type of query that many people perform several times per day. A search query is executed every time you use a search engine to find something. When you press the Enter key, the keywords are sent to the search engine, where they are processed by an algorithm that retrieves related results from the search index. Your query's results are displayed on a search engine results page, or SER.
When using the arc implementation to convert a super set entity into a relation, what if the entity
does not have a UID?
A) create an artificial UID for the super entity
B) create an artificial UID for the super entity and each sub type entity
C) use another attribute of the super type entity as UID
D) ask the designer to provide a UID
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