Redis 4.0 release notes ======================= -------------------------------------------------------------------------------- Upgrade urgency levels: LOW: No need to upgrade unless there are ...

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不可见索引概念 不可见索引(Invisible Index)是ORACLE 11g引入的新特性。不可见索引是会被优化器忽略的不可见索引，除非在会话或系统级别上将OPTIMIZER_USE_INVISIBLE_INDEXES初始化参数显式设置为TRUE。此参数的默 ...

Examine the description of the EMPLOYEES table: Name Null? Type EMP_ID NOT NULL NUMBER EMPNAME VA ...

Which three statements are true about GLOBAL TEMPORARY TABLES? A) GLOBAL TEMPORARY TABLE rows inserted by a session are available to any other session whose user has been granted select on the table. ...

Which three statements are true about performing Data Manipulation Language (DML) operations on a view In an Oracle Database? A) Insert statements can always be done on a table through a view. B) The ...

Which two are true about the WITH GRANT OPTION clause? A) The grantee can grant the object privilege to any user in the database, with of without including this option, B) The grantee must have the GR ...

Which three statements are true about the Oracle join and ANSI Join syntax? A) The Oracle join syntax only supports right outer joins, B) The Oracle join syntax supports creation of a Cartesian produc ...