Examine the description of the EMPLOYEES table: Name Null Type EMP_ID NOT NULL NUMBER EMP_NAME ...

Examine the description of the CUSTONERS table: Name Null? Type CUSTNO NOT NULL NUMBER(3) CUSTNAME NOT NULL ...

全栈数据库成熟的应用可能会用到许许多多的数据组件（功能）：缓存，OLTP，OLAP/批处理/数据仓库，流处理/消息队列，搜索索引，NoSQL/文档数据库，地理数据库，空间数据库，时序数据库，图数据库。传统的架构选型呢 ...

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Which two statements are true about the ORDER BY clause? A) Numeric values are displayed in descending order if they have decimal positions. B) Only columns that are specified in the SELECT list can b ...

Which two statements are true regarding non equijoins? A) The ON clause can be used. B) The USING clause can be used. C) The SQL:1999 compliant ANSI join syntax must be used. D) Table aliases must be ...

Table EMPLOYEES contains columns including EMPLOYEE_ID, JOB_ID and SALARY. Only the EMPLOYEES_ID column is indexed. Rows exist for employees 100 and 200. Examine this statement: UPDATE employees SET ( ...