create or replace function fn_test ( pid in number ) return tabTEST is Result tabTEST =tabTEST(); USERID number(12); VNAME varchar(200); orgid number(12); type tab is table of number; tab_test1 tab; /*** create
The use of generalized software to store and access the data base can reduce the duplication in application programming and system development that existed when these tasks were the province of each individual system. Finally, the existence and use of dbms -related software, such as query ...
obclient[SYS]>BEGINDBMS_RESOURCE_MANAGER.CREATE_PLAN(PLAN=>'plan_a');END;// 相关参数说明如下: PLAN:定义资源管理计划名称。 COMMENT:填写资源管理计划的备注信息。 创建成功后,可以查询DBA_RSRC_PLANS视图进行确认。 obclient[SYS]>select*fromDBA_RSRC_PLANS// ...
8、IN,OUT,IN OUT是形参的模式。若省略,则为IN模式。IN模式的形参只能将实参传递给形参,进入函数内部,但只能读不能写,函数返回时实参的值不变。OUT模式的形参会忽略调用时的实参值(或说该形参的初始值总是NULL),但在函数内部可以被读或写,函数返回时形参的值会赋予给实参。IN OUT具有前两种模式的特性,即调用...
DataBaseManagement,简称DBMS.数据库管理系统是专门用来管理数据库中数据的,数据库管理系统可以对薮据库当中的数据进行增删改查。 常见的数据库管理系统: MySQL、oracle、MS sqlserver、DB2、sybase等 SQL:结构化查询语句 程序员需要学习SQL语句,程序员通过编写sQz语句,然后DBMS负责执行sQL语句,最终来完成数据库中数据的...
SQL>CREATETABLEtASSELECT*FROMdba_objects; Tablecreated. SQL>SELECTCOUNT(*)FROMtWHEREowner ='SYS'ORowner ='SYSTEM'; COUNT(*) --- 23851 SQL>SELECT*FROMTABLE(DBMS_XPLAN.DISPLAY_CURSOR); PLAN_TABLE_OUTPUT --- SQL_ID 77xzyugx5q3kf, child number 0 --- SELECT COUNT(*) FROM t WHERE owner...
DBMS_AUDIT_MGMT.SET_AUDIT_TRAIL_LOCATION(audit_trail_type => DBMS_AUDIT_MGMT.AUDIT_TRAIL_AUD_STD, audit_trail_location_value => 'AUDIT_DATA'); END; / -- Query to view new tablespace select owner,segment_name,segment_type,tablespace_name,bytes/1024/1024 from dba_segments where segment_...
(a) What is a multivalued dependency in DBMS? (b) Give an example. Describe how the use of roles can help DBA in the management of security on a database. What is the difference between database manipulation language and database definition language? What are the basic characteristi...
SQL>CREATETABLEtASSELECT*FROMdba_objects; Tablecreated. SQL>SELECTCOUNT(*)FROMtWHEREowner ='SYS'ORowner ='SYSTEM'; COUNT(*) --- 23851 SQL>SELECT*FROMTABLE(DBMS_XPLAN.DISPLAY_CURSOR); PLAN_TABLE_OUTPUT --- SQL_ID 77xzyugx5q3kf, child number 0 --- SELECT COUNT(*) FROM t WHERE owner...
CLIENT_INFO Returns user session information stored using the DBMS_APPLICATION_INFO package ENTRYID Available auditing entry identifier INSTANCE The identifier number of the current instance ISDBA Returns TRUE if the user has DBA privileges. Otherwise, it will return FALSE. LANG The ISO abbreviation ...