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What is the diffraction limit of a 4-m telescope observing at a wavelength of 650 nm?
Validation Rule
In a database, generally defined as part of the data dictionary and specified in the field properties for each field; violations result in an error message and a suggested action.
Employee's ID Number
A unique identifier assigned to each employee within an organization for the purpose of identification and record-keeping.
Company Position
A specific role or job within a company, defined by a set of responsibilities, duties, and possibly a rank within the organizational hierarchy.
Database
An organized collection of structured information, or data, typically stored electronically in a computer system.
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