clave primaria

clave primaria

In relational databases, an attribute in an entity that uniquely identifies rows of that entity. For example, the Employee entity can contain an empID attribute that uniquely identifies each employee.

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ปรับปรุง

เพิ่มภาพ

ส่วนหนึ่งของคำพูด: noun
คำเหมือน:
Blossary:
อุตสาหกรรม/ขอบเขต: Software; Computer
Category: Operating systems
Company: Apple
ผลิตภัณฑ์: Mac OS X
ตัวย่อ-อักษรย่อ:

เพิ่มสู่อภิธานศัพท์ของฉัน

ภาษาอื่นๆ:

คำศัพท์ที่เกี่ยวข้อง

claves

Music; General music

A Cuban clapper consisting of two solid hardwood sticks; widely used in Latin-American music.

palabra clave

Software; Computer; Operating systems

(1) A word that is an explicit part of a programming language; also called a reserved word. (2) In a PostScript printer description file, a string used to describe a printer—for ...

habilidades clave

Education; Teaching

Vital skills necessary for a task or to gain employment including literacy, mathematics, and basic computer skills.

claves da lenda

Software; Accounting software

Symbols in legends that show the patterns and colors assigned to the data series (or categories) in a chart. Legend keys appear to the left of legend entries. Formatting a legend ...

clave de sesión

Software; Computer; Operating systems

A cryptographic key calculated or issued for use only for the duration of a specific communication session. Session keys are used, for example, by the Diffie-Hellman key exchange ...

matriz

Software; Computer; Operating systems

A collection of numbers arranged in a grid. It can be thought of as the mathematical equivalent of a two-dimensional array. Much like two-dimensional arrays, matrices are composed ...

nome

Software; Computer; Operating systems

In Search Kit, a document name as represented in a document URL object. For documents that are on-disk files, the name should correspond to the actual filename. For other types of ...

operador

Software; Computer; Operating systems

A symbol, word, or phrase that derives a value from another value or pair of values. In Search Kit, operators include AND , OR , NOT , parentheses, quotation marks, and several ...

contrasinal

Software; Computer; Operating systems

Data, usually a character string, used to authenticate a user for a service or application.

consulta

Software; Computer; Operating systems

(n.) A text string, containing terms and operators, that represents a user’s information retrieval request. Various types of query supported by Search Kit include simple, ...

rexistro

Software; Computer; Operating systems

(1) In databases in general, the set of values that describes a single instance of an entity. (2) In AppleScript, an unordered collection of properties, identified by unique ...