The customer and order tables are often used in joins， thereby resulting in complex queries. You created views to simplify the writing of queries. These views are stored in（）. A: user tables B: view segment C: table segment D: data dictionary E: object segment F: performance tables

The customer and order tables are often used in joins， thereby resulting in complex queries. You created views to simplify the writing of queries. These views are stored in（）. A: user tables B: view segment C: table segment D: data dictionary E: object segment F: performance table

假设需要导出某个表table1，只导出表结构，不导出数据，可以使用如下（）命令。 A: EXP user/pwd tables=（name,table1）file=export.dmp Rows=y B: EXP user1/pwd table table1 file=extable1.dmp C: EXP user/pwd tables=（name,table1）file=export.dmp Rows=n D: EXP user1/pwd table=table1 file=extable1.dmp Rows=

假设需要导出某个表table1，只导出表结构，不导出数据，可以使用如下（）命令。 A: AEXP user/pwd tables=（name,table1）file=export.dmp Rows=y B: BEXP user1/pwd table table1 file=extable1.dmp C: CEXP user/pwd tables=（name,table1）file=export.dmp Rows=n D: DEXP user1/pwd table=table1 file=extable1.dmp Rows=n

Sean got a job of 　 at a fast-food restaurant. A: wait for tables B: waiting for tables C: waiting tables D: /

oracle数据库数据字典视图USER_TABLES和ALL_TABLES有什么不同？（） A: ALL_TABLES只显示用户拥有的表. B: USER_TABLES只显示用户拥有的表. C: ALL_TABLES只显示用户拥有查询权限的表. D: USER_TABLES显示用户拥有查询权限的所有表

"To turn the tables" means ______. A: to move the tables B: to carry the tables away C: to gain courage D: to gain an advantage after having been at a disadvantage

New oak tables are normal goods. What would happen to the equilibrium price and quantity in the market for oak tables if the price of maple tables rises, the price of oak wood rises, more buyers enter the market for oak tables, and the price of wood saws increased?

将字段User改为user需要编写| rename User user

Tables and Figures should: