Evaluate the following statements: What are the two consequences of the above statements?（） Partitions of PURCHASE_ORDER_ITEMS have system-generated names.。 Both PURCHASE_ORDERS and PURCHASE_ORDER_ITEMS tables are created with four partitions each.。 Partitions of the PURCHASE_ORDER_ITEMS table exist in the same tablespaces as the partitions of the PURCHASE_ORDERS table.。 The PURCHASE_ORDER_ITEMS table inherits the partitioning key from the parent table by automatically duplicating the key columns.。 Partition maintenance operations performed on the PURCHASE_ORDER_ITEMS table are automatically reflected in the PURCHASE_ORDERS table.。
在微生物发酵过程中，为了更好降低发酵液的pH，可采取的“治本”的方法是（） 加糖并提高通气量。 加酸并提高通气量。 加糖并降低通气量。 加酸并降低通气量。
Youre performing tablespace point-in-time recovery on a tablespace called USERS. If an object in that tablespace has a foreign key constraint owned by another object in the INDEX_TBS which statement is true？（） You cannot perform the TSPITR with the constraints enabled.。 You must perform the TSPITR recovery of both tablespaces for it to be successful.。 You can perform TSPITR only on the USERS tablespace.。 RMAN will determine if the INDEX_TBS tablespace must also be duplicated and will duplicate it automatically.。 The TSPITR will only be successful if the constraint is enabled.。
化学毒物在体内的吸收、分布和排泄过程称为（）。 生物转化。 消除。 生物转运。 代谢。
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Evaluate these two SQL statements: SELECT last_name, salary, hire_dateFROM EMPLOYEES ORDRE BY salary DESC; SELECT last_name, salary, hire_dateFROM EMPOLYEES ORDER BY 2 DESC; What is true about them? （）
