Systematic index design consists of two processes
Systematic index design consists of two processes
1. Detect SELECT statements that are too slow due to inadequate indexing
Worst input: Variable values leading to the longest elapsed time
2. Design indexes that make all SELECT statements fast enough.
Table maintenance (INSERT, UPDATE,DELETE) must be fast enough as well
來自 “ ITPUB部落格 ” ,連結:http://blog.itpub.net/70014873/viewspace-2868092/,如需轉載,請註明出處,否則將追究法律責任。
相關文章
- Relational Database Index Design and the OptimizersDatabaseIndex
- Python, pandas: how to sort dataframe by index// Merge two dataframes by indexPythonIndex
- LeetCode-Two Sum III - Data structure designLeetCodeStruct
- Systematic Latch Contention Troubleshooting in OracleOracle
- consists of 和 comprises 詞解
- db_writer_processes-log_archive_max_processesHive
- 程式(Processes)
- SESSIONS, PROCESSES, TRANSACTIONSSession
- Sessions & Processes parameterSession
- Oracle RAC Background processesOracle
- coca after two months vs in two months
- How the JVM processes signalsJVM
- Dedicated and Shared Server ProcessesServer
- 增加連線數processes
- Connection/Session/Server ProcessesSessionServer
- The Oracle Background Processes for Sybase ProsOracleROS
- Types of Processes (108)
- Server Processes (112)Server
- sessions,processes的監控方法Session
- New Background Processes In 10g
- Overview of User Processes (109)View
- Overview of Oracle Processes (111)ViewOracle
- Queue Monitor Processes (QMNn) (125)
- a tale of two cities
- Two extremes in lifeREM
- Two Pirates - 2
- Shared Server Processes (Snnn) (131)Server
- KEEP INDEX | DROP INDEXIndex
- Two Types of Error in JAVAErrorJava
- Divide Two IntegersIDE
- Enqueue events part twoENQ
- F - Two Sequence Queries
- Tokitsukaze and Two Colorful Tapes
- 【Oracle】-【TWO_TASK】-TWO_TASK環境變數的作用Oracle變數
- rowid,index,INDEX FULL SCAN,INDEX FAST FULL SCAN|IndexAST
- nginx學習隨筆--worker_processesNginx
- [HP-UX] cannot fork: too many processesUX
- oracle中的processes,session,transaction引數OracleSession