| Architecture of the DBI Classes #1 |
| ‘’outer’’ |
| ‘’inner’’ |
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| Base classes |
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| providing |
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| fallback |
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| behavior. |
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| DBD::_::common |
| DBD::_::dr |
| DBD::_::db |
| DBD::_::st |
| DBI |
| DBI::dr |
| DBI::db |
| DBI::st |
| DBD::A::dr |
| DBD::A::db |
| DBD::A::st |
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| DBI handle
classes visible to applications. |
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| These classes are
effectively ‘empty’. |
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| DBD::B::dr |
| DBD::B::db |
| DBD::B::st |
| Parallel handle classes
implemented by drivers. |
| 10 |