在确定企业大中小的标准上，许多学者都坚持运用（）。 相对性原则。 地域性原则。 时间性原则。 差异性原则。
JZ-7型自动制动阀共有（）手柄作用位。 5个。 6个。 7个。 8个。
You execute this command to drop the ITEM table， which has the primary key referred in the ORDERS table：SQL> DROP TABLE scott.item CASCADE CONSTRAINTS PURGE； Which two statements are true about theeffect of the command（） No flashback is possible to bring back the ITEM table.。 The ORDERS table is dropped along with the ITEM table.。 The dependent referential integrity constraints in the ORDERS table are disabled.。 The dependent referential integrity constraints in the ORDERS table are removed.。 The table definition of the ITEM table and associated indexes are placed in the recycle bi。
Examine these statements: CREATE ROLE registrar GRANT UPDATE ON dtudent_grades TO registrar; GRANT registrar to user1, user2, user3; What does this set of SQL statements do? （） The set of statements contains an error and does not work.。 It creates a role called REGISTRAR, adds the MODIFY privilege on the STUDENT_GRADES object to the role, and gives the REGISTRAR role to three users.。 It creates a role called REGISTRAR, adds the UPDATE privilege on the STUDENT_GRADES object to the role, and gives the REGISTRAR role to three users.。 It creates a role called REGISTRAR, adds the UPDATE privilege on the STUDENT_GRADES object to the role, and creates three users with the role.。 It creates a role called REGISTRAR, adds the UPDATE privilege on three users, and gives the REGISTRAR role to the STUDENT_GRADES object.。 It creates a role called STUDENT_GRADES, adds the UPDATE privilege on three users, and gives the UPDATE role to the registrar.。
我国学科课程的雏形是（） 七艺。 语文、数学、外语。 礼、乐、射、御、书、数。 “五经”、“四书&rdquo。
In your production database you want to use an Automatic Storage Management （ASM） instance to manage the database files. Which option would you use to migrate the database files from a non-ASM instance to an ASM instance？（）
