Data Engineering Concepts

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4 Terms

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Attribute Constraints

Rules applied to attributes in a database to ensure data integrity and validity, including data types, uniqueness, and required values.

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CAST

A function that converts a value from one data type to another within a database or programming language.

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CONVERT

A function used to change a value from one data type to another, similar to CAST, often used in SQL queries.

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SELECT

A SQL command used to retrieve data from a database, allowing specification of columns, tables, and conditions to filter results.