When you create a backup control file， where is the resulting file written to？（） [" The database user dump destination directory"," The database diagnostic destination directory"," To $ORACLE_HOME\/rdbms"," To $ORACLE_HOME\/admin"," To the directory and filename you specify in the command"]
出芽生殖
Which business flow is used for activities starting from customer registration, to setting up ofproduct catalogs and targeted storefronts, and finally to capturing of the order?（） ["Click to Order","Order to Cash","Campaign to Order","Contract to Renewal"]
Consider the query: Mysql＞ SET @run = 15; Mysql＞ EXPLAIN SELECT objective, stage, COUNT (stage) FROM iteminformation WHERE run=@run AND objective=’7.1’ GROUP BY objective,stage ORDER BY stage; The iteminformation table has the following indexes; Mysql＞ SHOW INDEXES FROM iteminformation: This query is run several times in an application with different values in the WHERE clause in a growing data set. What is the primary improvement that can be made for this scenario?（） ["Do not pass a user variable in the WHERE clause because it limits the ability of the optimizer to use indexes","Add an index on the objective column so that is can be used in both the WHERE and GROUP BY operations","Drop the run_2 index because it has caused a conflict in the choice of key for this query","Execute the run_2 index because it has caused a conflict in the choice of key for this query","Add a composite index on (run,objective,stage) to allow the query to fully utilize an index"]
明代李时珍所著（）是世界闻名的药物学巨著，共收载药物（）种，现已译成（）种文本。
为什么在选留种鱼时要留足一定数量的亲鱼？
