A functional dependency α → β is called a partial dependency if there is aproper subset γ of α such that γ → β; we say that β is partially dependent on α. Arelation schema R is in second normal form (2NF) if each attribute A in R meetsone of the following criteria:• It appears in a candidate key • It is not partially dependent on a candidate key. Show that every 3NF schema is in 2NF. (Hint: Show that every partial dependency is a transitive dependency.)

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Q: Given the functional dependency (A, B) C and BCthen it is true that AC O True O False

A: It is False

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Intermediate SQL Concepts

A query is a request for data or information from one or more database tables. This information could be presented in the form of pictorials, graphs, or complicated findings which helps in easy interpretation. Structured Query Language (SQL) is the most widely used programming language for retrieving and organizing data from relational databases. Collection of tables with rows and columns is referred to as a database. SQL is the language of databases. It makes it easier to extract specific data from databases, which can then be used for analysis.