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Label: explanatory vs. Pre-compiled 1, the traditional database, stored procedures have comp process, IQ does not do. 2,!!! Stored procedure performance throughput is halved compared to direct queries. 3, within the IQ, multiple statements will be analyzed and converted into stored procedures to execute. So the statement executes more than once, and the statement executes less directly. 4. Using the index Simplified conditions Select algorithm Join group Number of rows CPU DISTINCT Record

Historical Data Store (HDS)1, the use of data is a large number of times, the data will not be a single increase and deletion of such operations, this scenario is suitable for IQ. investigating Data Systems: throughput, Response timeIQ corresponding time is not necessarily fast;Batch maintenance index after loading; it is recommended not to do this every minute, as much as possible, such as 10 minutes to do once. 2.InfoCenter. sybase.com/help/index.jsppay attention to the IQ handbook1/port def

SAP permission knowledge training notes √ system security 6. One of the permissions is System Security includes six aspects. Permission security is applicable to applications, and the other five aspects are infrastructure security. Authentication authentication. Before logon. Authorizations permission. Internal application software. Define what can be done (opposite to law ). Confidentiality is confidential

/.log/iq/store Path after completion, go to the slave node path: dbbackup-c "UID=DBA;PWD=SQL;ENG=T2;"-d-y. >dbbackup-c "uid=dba;pwd=sql;eng=mpx_n1;links=tcpip{port=2765}"-d-y. >dblog-r-T mpx_n1.log mpx_n1.db >start_iq-n mpx_sec-x "tcpip{port=2689}" @params. CFG mpx_n1.db Connect to a node dbisql-c ""-X "tcpip{}" alter tablespace iq_system_temp add FILE mpx_node_temp ' temp_file.iqtmp ' size Sp_iqmpxinfo View the master-slave interface information. DBLog the data mining function inside the IQ, e

================================================================================================>start_iq @params. CFG Add database Users two ways:Grant connect to U1 identified by ' 123456 ';Sp_iqaddlogin ' U2 ', ' sap123456 ';----note letters plus numbersa series of actions for groups and usersGrant connect to marketing;..... Grant execute on sp_iqlocks to U1Set stored procedure execution permissions. RevokeIQ Non-chained, open client connection, no explicit commit required. DML still c