You need to ensure that the Cust_CalcData column is implemented appropriately. What should you do?()
If a unique constraint is defined on column COL1 of table TAB1, what are the characteristics of COL1?()
Grid、Text、CommandGroup、Column是VFP系统中的对象,它们当中不能直接加到表单中的对象是什么?
Examine the structure of the EMP_DEPT_VU view: Column Name Type Remarks EMPLOYEE_ID NUMBER From the EMPLOYEES table EMP_NAME VARCHAR2(30) From the EMPLOYEES table JOB_ID VARCHAR2(20) From the EMPLOYEES table SALARY NUMBER From the EMPLOYEES table DEPARTMENT_ID NUMBER From the DEPARTMENTS table DEPT_NAME VARCHAR2(30) From the DEPARTMENTS table Which SQL statement produces an error?()
The SAVE_AMT column in the ACCOUNTS table contains the balance details of customers in a bank. As part of the year/x7fend tax and interest calculation process, all the rows in the table need to be accessed. The bank authorities want to track access to the rows containing balance amounts exceeding $200,000, and then send an alert message to the administrator. Which method would you suggest to the bank for achieving this task?()
Which three are DATETIME data types that can be used when specifying column definitions? ()
Which constraint can be defined only at the column level?()
For self elevating and column stabilized units, is 100% lifeboat capacity acceptable for the MODU Code?()
列标头的父类是()基类。
创建计算列时应该使用Column的()属性。