Locking

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Locking

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The Borland Database Engine locking environment is a hierarchy consisting of three layers:

Session layer
(Owns database handles, table cursors,
acquired table locks, and record locks)

Database handle layer
(Open mode limits the open mode of tables in the database)

Table cursor layer
(Cursor open mode can limit access)

 

See the following topics on the layers and details about table locking:

•Session layer

•Database handle layer

•Table cursor layer

 

hmtoggle_plus1Locking topics

Acquired locks

Acquired Persistent Table Locks

Acquired Table Locks

Database handle layer

Locking functions

Locking strategy

Record Locks

Session layer

SQL-specific locking behaviour

Table cursor layer

Table lock coexistence