Attribute data Flashcards

1
Q

attribute table

A

contains information about features with 1 row for each feature linked to the spatial data by an FID

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2
Q

records

A

rows in a table

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3
Q

fields

A

columns in a table

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4
Q

standalone table

A

exists independently of a geographic dataset

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5
Q

flat file database

A

stores rows of information in a text or binary file, simple but inefficient management system

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6
Q

hierarchical database

A

has multiple files each containing multiple records and fields, related tables connected by a fixed key

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7
Q

relational database

A

multiple tables stored as files without predefined relationships, the user can temporarily join tables sharing a common field, preferred management system

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8
Q

key

A

used to join tables via a shared field, this can be undone at any time

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9
Q

join table

A

the source table, contains the information to be appended

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10
Q

target table

A

the destination table, receives the appended information, can join multiple join tables to a single target

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11
Q

cardinality

A

numeric relationships between objects in one table and their match in another, listed as target to join

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12
Q

rule of joining

A

there must be only one record in the join table for each record in the target table, joins are possible for one to one and many to one

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13
Q

relate

A

keeps tables separate but allows for analysis similar to a join, used for one to many cardinality

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14
Q

case field

A

specified field used to create groups to analyze smaller chunks of data

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15
Q

field definition

A

must be entered before any data can be entered into a field, cannot be changed

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16
Q

field length

A

defines how many characters can be stored in a text field

17
Q

ASCII

A

standard by which byte codes are defined for storing letter, number, and symbol codes

18
Q

binary

A

more efficient for storing numbers

19
Q

float

A

floating point field stores 8 sig figs of information, used for very large or small numbers

20
Q

double

A

field that stores 16 sig figs of information, used for very large or small numbers

21
Q

domain

A

rule about the allowable content of a field, coded domains provide a list of values, range domains specify an min or max

22
Q

schema of a table

A

fields, data types, properties, domains, and other characteristics of a table

23
Q

fields view

A

used to view and modify the properties of a table

24
Q

calculate fields tool

A

used to calculate new fields based on existing fields, must make a new field first or it will destroy the existing data

25
Q

add geometry attributes tool

A

calculates feature measurements in a new field

26
Q

short text fields

A

+-32,000

27
Q

long text fields

A

+-2,147,000,000

28
Q

field summary

A

creates a new stand alone table with summary statistics for each feature