Pelatihan SIG

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Basic GIS FunctionsCaptureStoreQueryAnalyzeDisplayOutputStore

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Sumbar Data ArcGIS

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*Geodatabase

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File GeodatabaseFile geodatabasesStored as folders in a file system.There is no limit on the geodatabase size. Each dataset is held as a file that can scale up to 1 TB in size. This limit can be extended to 256 TB (for example, for very large raster datasets). The file geodatabase supports one editor and many readers (as many users as file systems can typically handle before performance degrades). Long transactions and versioning are not supported.

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Personal GeodatabasePersonal geodatabasesAll datasets are stored within a Microsoft Access data file, which is limited in size to 2 GB. However, the effective limit before performance degrades is typically between 250 and 500 MB per Access database file. A personal geodatabase is not as fast, efficient, or scalable as file geodatabases; however, it supports attribute manipulation and string handling in Microsoft Access.Long transactions and versioning are not supported

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ArcSDE GeodatabaseArcSDE geodatabasesStored in a relational database such as Oracle, Microsoft SQL Server, IBM DB2, PostgreSQL, or IBM Informix. ArcSDE geodatabases support multiple users and editors and support long transactions in GIS using versioning.These multiuser geodatabases require ArcSDE technology, which is included in ArcGIS Desktop, ArcGIS Server, and ArcGIS Engine. In ArcSDE geodatabases, there is no limit to size or numbers of users.

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Tipe Data GeodatabaseGeodatabaseFeature datasetFeature class

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Data Spasial dan Atribut

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Tipe data numerik

Data typeStorable rangeSize (Bytes)ApplicationsShort integer-32,768 to 32,7672Numeric values without fractional values within specific range; coded valuesLong integer-2,147,483,648 to 2,147,483,6474Numeric values without fractional values within specific rangeSingle-precision floating-point number (float)approximately -3.4E38 to 1.2E384Numeric values with fractional values within specific rangeDouble-precision floating-point number (double)approximately -2.2E308 to 1.8E3088Numeric values with fractional values within specific range

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Georeferencing

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