uhh... by Kevin Samadhana https://padlet.com/kevinnsamadhana/eb4tapo9lhqn HELP..!! en-us 2018-09-24 13:18:35 UTC 2018-10-14 12:38:07 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Xmastree.png Number 1 kevinnsamadhana https://padlet.com/kevinnsamadhana/eb4tapo9lhqn/wish/285003260 Consider two sets of D1 & D2 where D1={1,8} & D2={5,8}
Cartesian product, D1 X D2, is set of all ordered pairs, where first element is member of D1 and second element is member of D2.
D1 X D2 =

A. {(1, 5), (1, 8), (8, 5)}
B. {(1, 5), (8, 5)}
C. {(1, 5), (1, 8), (8, 5), (8, 8)}
D. {(1, 5), (1, 8)]]> 2018-09-24 13:25:43 UTC https://padlet.com/kevinnsamadhana/eb4tapo9lhqn/wish/285003260 Number 7 kevinnsamadhana https://padlet.com/kevinnsamadhana/eb4tapo9lhqn/wish/285012699 What constraints CAN'T be put in a database for the data of Binus Universities students?

A.  Name cannot be NULL
B.  NIM can be NULL
C.  Age can be NULL
D.  Contact email cannot be NULL]]> 2018-09-24 13:40:15 UTC https://padlet.com/kevinnsamadhana/eb4tapo9lhqn/wish/285012699 Number 6 kevinnsamadhana https://padlet.com/kevinnsamadhana/eb4tapo9lhqn/wish/285012813 Attribute, or set of attributes, within one relation that matches candidate key of some (possibly same) relation. 
Hint : the key that becomes the bridge between database

A. Superkey
B. Primary key
C. Foreign key
D. Alternate key
]]> 2018-09-24 13:40:26 UTC https://padlet.com/kevinnsamadhana/eb4tapo9lhqn/wish/285012813 Number 5 kevinnsamadhana https://padlet.com/kevinnsamadhana/eb4tapo9lhqn/wish/285012887 Which one below is the alternative name/terminology for "Tuple"

A.  Row
B.  Table
C.  File
D.  Column]]> 2018-09-24 13:40:33 UTC https://padlet.com/kevinnsamadhana/eb4tapo9lhqn/wish/285012887 Number 4 kevinnsamadhana https://padlet.com/kevinnsamadhana/eb4tapo9lhqn/wish/285012939 What is cardinality?

A.  a row of relation
B.  the number of attributes in a relation
C.  the number of tuples in a relation
D.  an attribute of relation

]]> 2018-09-24 13:40:38 UTC https://padlet.com/kevinnsamadhana/eb4tapo9lhqn/wish/285012939 Number 3 kevinnsamadhana https://padlet.com/kevinnsamadhana/eb4tapo9lhqn/wish/285013011 Cartesian product of n sets ( D1, D2, ...... Dn) is usually written as:

A.  n
      Σ   Di
     i=1

B.  i=1
       Σ   Di
       n

C.   n
       X   Di
      i=1

D.   i=1
       X   Di
      n]]> 2018-09-24 13:40:44 UTC https://padlet.com/kevinnsamadhana/eb4tapo9lhqn/wish/285013011 Number 2 kevinnsamadhana https://padlet.com/kevinnsamadhana/eb4tapo9lhqn/wish/285013060 Which cartesian product pairs are in relation using this condition for selection: "First element is 5"

A.  {(5, 8), (7, 8)}
B.  {(5, 9), (5, 6)}
C.  {(9, 4), (5, 7)}
D.  a, b, dan c benar]]> 2018-09-24 13:40:48 UTC https://padlet.com/kevinnsamadhana/eb4tapo9lhqn/wish/285013060