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Oracle Berkeley DB Programmer's Reference Guide （Version 18.1.32）
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Database truncation

 来源:Oracle 浏览 314 扫码 分享 2021-06-13 14:20:35
  • Database truncation

    Database truncation

    The DB->truncate() method empties a database of all records.

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    • Berkeley DB Programmer’s Reference Guide
    • Preface
    • 1. Introduction
      • Mapping the terrain: theory and practice
      • What is Berkeley DB?
      • What Berkeley DB is not
      • Do you need Berkeley DB?
      • What other services does Berkeley DB provide?
      • What does the Berkeley DB distribution include?
      • Where does Berkeley DB run?
      • The Berkeley DB products
    • 2. Access Method Configuration
      • Selecting an access method
      • Logical record numbers
      • General access method configuration
      • Btree access method specific configuration
      • Hash access method specific configuration
      • Heap access method specific configuration
      • Queue and Recno access method specific configuration
    • 3. Access Method Operations
      • Opening multiple databases in a single file
      • Partitioning databases
      • Retrieving records
      • Storing records
      • Deleting records
      • Database statistics
      • Database truncation
      • Database upgrade
      • Database verification and salvage
      • Flushing the database cache
      • Database close
      • Secondary indexes
      • Foreign key indexes
      • Cursor operations
    • 4. Access Method Wrapup
      • Retrieving and updating records in bulk
      • Partial record storage and retrieval
      • Storing C/C++ structures/objects
      • Retrieved key/data permanence for C/C++
      • Error support
      • Cursor stability
      • Database limits
      • Disk space requirements
      • External File support
      • Access method tuning
      • Access method FAQ
    • 5. Java API
      • Compatibility
      • Java programming notes
      • Java FAQ
    • 6. Berkeley DB Server
    • 7. C# API
    • 8. Standard Template Library API
      • Dbstl typical use cases
      • Dbstl examples
      • Berkeley DB configuration
      • Using advanced Berkeley DB features with dbstl
      • Using transactions in dbstl
      • Using dbstl in multithreaded applications
      • Working with primitive types
      • Store and Retrieve data or objects of complex types
      • Dbstl persistence
      • Dbstl container specific notes
      • Using dbstl efficiently
      • Dbstl memory management
      • Dbstl miscellaneous notes
      • Dbstl known issues
    • 9. Berkeley DB Architecture
      • Programming model
      • Programmatic APIs
      • Scripting languages
      • Supporting utilities
    • 10. The Berkeley DB Environment
      • Creating a database environment
      • Sizing a database environment
      • Opening databases within the environment
      • Error support
      • DB_CONFIG configuration file
      • File naming
      • Shared memory regions
      • Security
      • Encryption
      • Remote filesystems
      • Environment FAQ
    • 11. Berkeley DB Data Store and Concurrent Data Store Applications
      • Handling failure in Data Store and Concurrent Data Store applications
      • Architecting Data Store and Concurrent Data Store applications
      • Quick Start Guide
    • 12. Berkeley DB Transactional Data Store Applications
      • Why transactions?
      • Terminology
      • Handling failure in Transactional Data Store applications
      • Architecting Transactional Data Store applications
      • Getting Started with Transactional Data Store Applications
      • Opening the environment
      • Opening the databases
      • Recoverability and deadlock handling
      • Atomicity
      • Isolation
      • Degrees of isolation
      • Transactional cursors
      • Nested transactions
      • Environment infrastructure
      • Deadlock detection
      • Checkpoints
      • Database and log file archival
      • Log file removal
      • Recovery procedures
      • Hot failover
      • Using Recovery on Journaling Filesystems
      • Recovery and filesystem operations
      • Berkeley DB recoverability
      • Transaction tuning
      • Transaction throughput
      • Transaction FAQ
    • 13. Berkeley DB Replication
      • Replication environment IDs
      • Replication environment priorities
      • Building replicated applications
      • Replication Manager methods
      • Base API methods
      • Building the communications infrastructure
      • Connecting to a new site
      • Managing Replication Manager group membership
      • Replication views
      • Managing replication directories and files
      • Running Replication Manager in multiple processes
      • Running replication using the db_replicate utility
      • Choosing a Replication Manager acknowledgement policy
      • Elections
      • Synchronizing with a master
      • Initializing a new site
      • Bulk transfer
      • Transactional guarantees
      • Master leases
      • Read your writes consistency
      • Clock skew
      • Communicating between Replication Manager Sites
      • Special considerations for two-site replication groups
      • Network partitions
      • Replication FAQ
      • Ex_rep: a replication example
      • Ex_rep_base: a TCP/IP based communication infrastructure
      • Ex_rep_base: putting it all together
      • Ex_rep_chan: a Replication Manager channel example
    • 14. Berkeley DB Slice Support
      • Slice APIs
      • Key Design
    • 15. Distributed Transactions
      • Berkeley DB XA Implementation
      • Building a Global Transaction Manager
      • XA Introduction
      • Configuring Berkeley DB with the Tuxedo System
      • Restrictions on XA Transactions
      • XA: Frequently Asked Questions
    • 16. Application Specific Logging and Recovery
      • Defining application-specific log records
      • Automatically generated functions
      • Application configuration
    • 17. Programmer Notes
      • Error returns to applications
      • Globalization Support
      • Environment variables
      • Multithreaded applications
      • Berkeley DB handles
      • Name spaces
      • Memory-only or Flash configurations
      • Disk drive caches
      • Copying or moving databases
      • Compatibility with historic UNIX interfaces
      • Run-time configuration
      • Performance Event Monitoring
      • Programmer notes FAQ
    • 18. The Locking Subsystem
      • Configuring locking
      • Configuring locking: sizing the system
      • Standard lock modes
      • Deadlock detection
      • Deadlock detection using timers
      • Deadlock debugging
      • Locking granularity
      • Locking without transactions
      • Locking with transactions: two-phase locking
      • Berkeley DB Concurrent Data Store locking conventions
      • Berkeley DB Transactional Data Store locking conventions
      • Locking and non-Berkeley DB applications
    • 19. The Logging Subsystem
      • Configuring logging
      • Log file limits
    • 20. The Memory Pool Subsystem
      • Configuring the memory pool
      • Warming the memory pool
    • 21. The Transaction Subsystem
      • Configuring transactions
      • Transaction limits
    • 22. Sequences
    • 23. Berkeley DB Extensions: Tcl
      • Using Berkeley DB with Tcl
      • Tcl API programming notes
      • Tcl error handling
      • Tcl FAQ
    • 24. Berkeley DB Extensions
      • Using Berkeley DB with Perl
      • Using Berkeley DB with PHP
    • 25. Dumping and Reloading Databases
      • Dump output formats
      • Loading text into databases
    • 26. Additional References
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