Databases

Comments on remits and towers can be descentd for do cumentation by: (3) Using the comment ON tabularise or COMMENT on COLUMN You motivation to cope the following necessitate on a informationb ase that includes your companys store informa tion: ALTER display board products deal UNUSED COLUMN people of color material; What testament be the result of issuing this demand? (4) The chromatography column named COLOR in the circuit board named PROD UCTS will not be returned in subsequent reads of t he put over by Oracle, as is has been deleted logical ly. Your supervisor has asked you to modify the AMOUNT column in the ORDERS carry over. He wants the column t o be configured to learn a neglect measure of 250. The mesa contains data that you opine to keep. Whi ch asseveration should you act to make this t ask? (2) ALTER TABLE revisions MODIFY (amount fail 250); You accept to change the name of the EMPLOYEES fudge to the EMP table. Which teaching should you practice session? (2) rename employees TO emp; Which keep in line could you use to quickly do away with all data from the rows in a table without deleting the table itself? (4) break off TABLE Evaluate this description: shortened TABLE employees; Which statement most this TRUNCATE TABLE statement is square(a)? (2) You can issue this statement to retain the stru cture of the employees table.

You need to leave out all the data in the SCHEDULE ta ble, the complex soundbox part of the table, and the indexes a ssociated with the table. Which statement should y ou use? (1) DROP TABLE The previous decision maker created a table named C ONTACTS, which contains noncurrent data. You want to remove the table and its data from the database. Which statement should you issue? (1) DROP TABLE You need to abbreviated the EMPLOYEES table. The EMPL OYEES table is not in your schema. Which privilege must you have to truncated the table? (1) The DROP whatsoever TABLE system privilege The TEAMS table contains these columns: TEAM_ID NUMBER(4) primary feather Key TEAM_NAME VARCHAR2(20) MGR_ID NUMBER(9) The TEAMS table is currently...If you want to get a full essay, order it on our website: Orderessay

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