The CALC function is used several times within the sales report. To simplify maintenance you want to store the function in one place and call it from within your PL/SQL trigger code. Which node would you use in object navigator to create a report level programme unit to store the function?()
A. Programme units.
B. PL/SQL libraries.
C. Database object.
D. Built in packages.
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悬挂保护间隙应先将其与接地网可靠接地,再将保护间隙挂在导线上,并使其接触良好。拆除的程序与其相同。
A. 正确
B. 错误
《空调列车服务质量规范》行李车货仓保持干净,留有安全通道, 保证货物装卸和人员正常通行,货物堆码平稳、牢固、整齐,不堵塞车门,不超载、偏载、超限。
A. 正确
B. 错误
You created an encrypted tablespace: You then closed the encryption wallet because you were advised that this is secure. Later in the day, you attempt to create the EMPLOYEES table in the SECURESPACE tablespace with the SALT option on the EMPLOYEE column. Which is true about the result?()
A. It creates the table successfully but does not encrypt any inserted data in the EMPNAME column because the wallet must be opened to encrypt columns with SAL
B. It generates an error when creating the table because the wallet is closed.
C. It creates the table successfully, and encrypts any inserted data in the EMPNAME column because the wallet needs to be open only for tablespace creation.
D. It generates error when creating the table, because the salt option cannot be used with encrypted tablespaces.