Tag: technology

Quizzes (307) Questions (36705)

Questions Related to technology

Multiple choice technology databases

create or replace procedure "test" as a_string varchar(1000 char) := NULL; b_string varchar(2000 char) := NULL; fullname VARCHAR(200 char); edate VARCHAR(200 char); SG VARCHAR(1000 char); cursor c_username is select userid, username from knta_users where username like 'D%'; Begin open c_username; for i in c_username loop a_string := ''; a_string := a_string || ' ' ||i.userid; select full_name into fullname from knta_users where username = i.username ; a_string := a_string || ' ' ||fullname; DBMS_OUTPUT.PUT_LINE( ' ' ||a_string ); END LOOP; close c_username; end "test"; Examine the procedure and choose what will happen when this procedure is executed:

  1. This procedure will not compile successfully.

  2. This procedure will print the Userid and fullname of users whose username starts with ‘D’;

  3. This procedure will print just the fullname of the users.

  4. This procedure will print just the userid of the users.
Reveal answer Fill a bubble to check yourself
B Correct answer
Full explanation
Multiple choice technology databases

create or replace procedure "test" as a_string varchar(1000 char) := NULL; b_string varchar(2000 char) := NULL; fullname VARCHAR(200 char); edate VARCHAR(200 char); SG VARCHAR(1000 char); cursor c_username is select userid, username from knta_users where username like 'D%'; Begin open c_username; for i in c_username loop a_string := ''; a_string := a_string || ' ' ||i.userid; select full_name into fullname from knta_users where username = i.username ; DBMS_OUTPUT.PUT_LINE( ' ' ||a_string ); END LOOP; close c_username; end "test"; Examine the procedure and choose what will happen when this procedure is executed:

  1. This procedure will print the Userid and fullname of users whose username starts with ‘D’;

  2. This procedure will not compile successfully.

  3. This procedure will print just the fullname of the users.

  4. This procedure will print just the userid of the users.
Reveal answer Fill a bubble to check yourself
D Correct answer
Multiple choice technology databases

Which query will have a better performance? a) SELECT count(), request_type_name FROM KCRT_REQUEST_TYPES WHERE request_type_id IN (SELECT request_type_id FROM kcrt_requests) GROUP BY request_type_name; OR b) SELECT count(), request_type_name FROM kcrt_requests kr,kcrt_request_types krt WHERE kr.request_type_id = krt.request_type_id GROUP BY request_type_name ;

  1. a

  2. b

  3. Can't tell

  4. both will perform the same
Reveal answer Fill a bubble to check yourself
B Correct answer
Full explanation
Multiple choice technology databases

SELECT count(*),status_id,status_name FROM kcrt_statuses WHERE STATUS_ID IN (SELECT STATUS_ID FROM kcrt_request_type_statuses) GROUP BY status_id; What will be the output?

  1. Returns the count of rows grouped by statuses

  2. Error - Incorrect use of COUNT. It has to have a column name.

  3. Error - because of the GROUP BY Clause or Selected columns

  4. Does not return the count, just displays the other two fields.
Reveal answer Fill a bubble to check yourself
C Correct answer
Full explanation
Multiple choice technology databases

KCRT_REQUEST_DETAILS Request_type_id Request_id Batch_No Visible_parameter41 Visible_parameter31 --------------- ----------- --------- ------------------- ------------------- 1 31300 1 Online (null) 1 31300 2 Batch (null) 1 31300 3 Manually (null) 2 31301 1 2010-03-17 11:55:00 99 2 31301 2 2009-11-09 14:00:00 55 2 31301 3 2010-05-27 11:55:00 789 3 31302 1 TCS ACCM1 3 31302 2 INFOSYS BAPP1 3 31302 3 CTS IT1 KCRT_REQUEST_TYPES Request_Type_Id Request_Type_Name --------------- ----------------- 1 AXA_RT_Application_Demand 2 AXA_RT_Application_Definition 3 AXA_RT_Support_Release Choose the update statement to update visible_parameter41 (Batch_No 3) by visible_parameter31 (Batch_No 2) for all the request_id in table KCRT_REQUEST_DETAILS whose request_type_name is ‘AXA_RT_Application_Demand’?

  1. update KCRT_REQUEST_DETAILS reqd set reqd.visible_parameter41 = (select reqd1.visible_parameter31 from kcrt_request_details reqd1 where reqd1.batch_number= '2' and reqd1.request_id = reqd.request_id) where reqd.batch_number ='3' and reqd.request_id in (se

  2. Update KCRT_REQUEST_DETAILS set visible_parameter41 = (select visible_parameter31 from KCRT_REQUEST_DETAILS where batch_number =2) where request_type_id = (select request_type_id from KCRT_REQUEST_TYPES where request_type_name = ‘AXA_RT_Application_Demand

  3. Update KCRT_REQUEST_DETAILS set visible_parameter41 = (select visible_parameter31 from KCRT_REQUEST_DETAILS where batch_number =2) where batch_number = 3 and request_type_id = (select request_type_id from KCRT_REQUEST_TYPES where request_type_name = ‘AXA_

  4. Update KCRT_REQUEST_DETAILS set visible_parameter41 = (select visible_parameter31 from KCRT_REQUEST_DETAILS where batch_number =2 and and request_type_id = (select request_type_id from KCRT_REQUEST_TYPES where request_type_name = ‘AXA_RT_Application_Deman
Reveal answer Fill a bubble to check yourself
A Correct answer
Full explanation
Multiple choice technology databases

KCRT_REQUEST_DETAILS Request_type_id Request_id Batch_No Visible_parameter41 Visible_parameter31 --------------- ----------- --------- ------------------- ------------------- 1 31300 1 Online (null) 1 31300 2 Batch (null) 1 31300 3 Manually (null) 2 31301 1 2010-03-17 11:55:00 99 2 31301 2 2009-11-09 14:00:00 55 2 31301 3 2010-05-27 11:55:00 789 3 31302 1 TCS ACCM1 3 31302 2 INFOSYS BAPP1 3 31302 3 CTS IT1 KCRT_REQUEST_TYPES Request_Type_Id Request_Type_Name --------------- ----------------- 1 AXA_RT_Application_Demand 2 AXA_RT_Application_Definition 3 AXA_RT_Support_Release The statement that converts the Visible_parameter41 in the format ‘17/03/10’ for Request_id = 31301 for batch No ‘1’?

  1. SELECT to_char(visible_parameter41,’yyyy-mm-dd hh24:mi:ss’) from KCRT_REQUEST_DETAILS where request_id = 31301 and batch_number = ‘1’;

  2. SELECT to_date(visible_parameter41) from KCRT_REQUEST_DETAILS where request_id = 31301 and batch_number = ‘1’;

  3. SELECT to_date(visible_parameter41, ‘mm-dd-yyyy hh24:mi:ss’) from KCRT_REQUEST_DETAILS where request_id = 31301 and batch_number = ‘1’;

  4. SELECT to_date(visible_parameter41,’yyyy-mm-dd hh24:mi:ss’) from KCRT_REQUEST_DETAILS where request_id = 31301 and batch_number = ‘1’;
Reveal answer Fill a bubble to check yourself
D Correct answer
Full explanation