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Re:Ruby concepts part 2 (1 viewing) (1) Guest
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TOPIC: Re:Ruby concepts part 2
#4624
ShriNi (User)
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Ruby concepts part 2 3 Years, 10 Months ago Karma: 0  
DBI stands for Database independent interface for Ruby .

This means DBI provides an abstraction layer between the Ruby code and the underlying database, allowing you to switch database implementations really easily
 
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#4625
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Re:Ruby concepts part 2 3 Years, 10 Months ago Karma: 0  
DBI can interface with the following

ADO (ActiveX Data Objects)
DB2
Frontbase
mSQL
MySQL
ODBC
Oracle
 
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Re:Ruby concepts part 2 3 Years, 10 Months ago Karma: 0  
DBI is independent of any database available in backend. You can use DBI whether we are working with Oracle, MySQL or Informix
 
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Re:Ruby concepts part 2 3 Years, 10 Months ago Karma: 0  
The general architecture for Ruby DBI uses two layers

1.The database interface (DBI) layer

2.The database driver (DBD) layer.
 
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Re:Ruby concepts part 2 3 Years, 10 Months ago Karma: 0  
The database interface (DBI) layer.

This layer is database independent and provides a set of common access methods that are used the same way regardless of the type of database server with which you're communicating
 
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Re:Ruby concepts part 2 3 Years, 10 Months ago Karma: 0  
The database driver (DBD) layer.

This layer is database dependent; different drivers provide access to different database engines.

There is one driver for MySQL, another for PostgreSQL, another for InterBase, another for Oracle, and so forth.

Each driver interprets requests from the DBI layer and maps them onto requests appropriate for a given type of database server
 
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