Question: 1. Write the output of the following SQL command: (i) selectconcat(Lcase('To be'),trtm(traillng '.' From 'continued ... ')); (ii) select round(15.193,1) + truncate(2.24,1); (iii) selectlen(trim('Ajay#Jain###')) (#

1. Write the output of the following SQL command:

(i) selectconcat(Lcase('To be'),trtm(traillng '.' From 'continued ... '));

(ii) select round(15.193,1) + truncate(2.24,1);

(iii) selectlen(trim('Ajay#Jain###')) (# means blank space)

(iv) select mid(trim('#lnformatics Practices##'),6,6); (# means blank space)

2. There is a table Tl with combination of columns Cl, C2, and C3 as its primary key? Is it possible to enter:

a. NULL values in any of these columns?

b. Duplicate values in any of these columns?

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