Which statement describes the ROWID data type? （） Binary data up to 4 gigabytes.。 Character data up to 4 gigabytes.。 Raw binary data of variable length up to 2 gigabytes.。 Binary data stored in an external file, up to 4 gigabytes.。 A hexadecimal string representing the unique address of a row in its table.。
“了解中学生世界观、人生观、价值观形成的过程及其教育方法”是教师应具备的通识性知识。
In your database instance， the user sessions are connected to the database server from the remote machines.You want to achieve the following for these users： 1. The user account must be locked after four unsuccessful login attempts. 2. The user must be prompted to change the password at regular intervals. 3. The user may not have more than three simultaneous sessions. 4. The user session must automatically be logged off if more than 10 minutes elapsed time used. How would you accomplish the above（） By assigning profiles for the users。 By implementing Fine-Grained Auditing （FGA）。 By granting a secure application role to the users。 By implementing the Database Resource Manager pla。
按危机来源划分小企业遇到的危机类型，其中不包括（）。 供应危机。 财务危机。 品牌危机。 战略危机。
简述对语言“约定俗成”性的理解。
Which statement most accurately describes the implementation of a SQL Access Advisor recommendation?（）
