SDB_AT - Data access type

Enumarators overview

• AT_BIN (3) - Flat file
  
• AT_CODE (2) - 16 bit enumeration instance
  
• AT_CSV (13) - Extended self delimiter file
  
• AT_DIR (5) - Directory access
  
• AT_ESDF (7) - Extended self delimiter file
  
• AT_NONE (0) - Instances not stored in a database
  
• AT_ODABA (1) - Instances stored in an ODABA database
  
• AT_VIEW (8) - ODABA view
  
• AT_XML (10) - XML file format
  
• AT_unknown (-1) - Access type unknown
  

Enumerator details

1. AT_unknown - Access type unknown
   Code: -1
   to list
2. AT_NONE - Instances not stored in a database
   

   When this option is set, no database access is provided for instances in the collection.

   Code: 0
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3. AT_ODABA - Instances stored in an ODABA database
   

   This is the default for persistent structures defined in ODABA. Usually, collections and structures defined in an ODABA dictionary do have this access type.

   Code: 1
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4. AT_CODE - 16 bit enumeration instance
   

   Instances for an enumeration are stored in an enumeration collection, which is part of the dictionary and not of the database. Enumeration values are stored in the external instance (enumerated attributes) with 16 bit. Internally, enumerator codes are stored in 32 bit numbers, always.

   Notes:

   This format is used for compatibility reasons, only. Up to version 12, only 16 bit enumerations had been supported.

   Code: 2
   to list
5. AT_BIN - Flat file
   

   Instances are stored in a flat file with a fixed structure. Instances may contain numeric or text data according to the definition. Access to binary files is supported by the OBINA.DLL.

   Code: 3
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6. AT_DIR - Directory access
   

   Directory access allows directly reading file directory structures via ODABA property handle.

   Code: 5
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7. AT_ESDF - Extended self delimiter file
   

   This ASCII formats an extension of the CSV (comma separated file) format, which allows importing or exporting instances and related collections as well as complex attributes or base structures.

   Code: 7
   to list
8. AT_VIEW - ODABA view
   

   This format refers to transient predefined ODABA views, which can be accesses in the same way as other data.

   Code: 8
   to list
9. AT_XML - XML file format
   

   The xml format is an ODABA extension provided in order to access external xml data files in an ODABA compliant way.

   Code: 10
   to list
10. AT_CSV - Extended self delimiter file
    

    This ASCII formats an extension of the CSV (comma separated file) format, which allows importing or exporting instances and related collections as well as complex attributes or base structures.

    Code: 13
    to list