O n c e   t h e   d a t a   h a s   b e e n   c o l l e c t e d   b o t h   i n t e r n a l l y   a n d   e x t e r n a l l y ,   t h e   q u e s t i o n   r e m a i n s   h o w   t o   s t o r e   i t   a p p r o p r i a t e l y .   D a t a   l a k e s   a r e   u n s t r u c t u r e d   p o o l s   o f   r a w   d a t a     e a s y   t o   a c c e s s   a n d   u p d a t e .   Y o u   n e e d   t o   m a k e   s u r e   y o u r   d a t a   f l o w   m e e t s   y o u r   s e c u r i t y   a n d   c o m p l i a n c e   r e q u i r e m e n t s .   B i g   d a t a   s t o r a g e   u s u a l l y   r e q u i r e s   d a t a   w a r e h o u s e s ,   d a t a   l a k e s   a n d   d a t a   m a r t s .   E x p e r t s   t y p i c a l l y   u s e   a   p r o g r a m m i n g   l a n g u a g e s u c h   a s   P y t h o n ,   J a v a   o r   C + +   t o   w r i t e   a n d   v a r i o u s   t o o l s   t o   t e s t   a n d   i t e r a t e o f t e n   o v e r   l o n g   t i m e l i n e s .
21% of employees think writing is the greatest art form.
( z0 think :ARG0 ( z1 person :ARG1-of ( z2 include :ARG2 ( z3 person :ARG1-of ( z4 employ ) ) :ARG3 ( z5 percentage-entity :value 21 ) ) ) :ARG1 ( z6 form :ARG1-of ( z7 have-degree :ARG2 ( z8 great ) :ARG3 ( z9 most ) ) :domain ( z10 write ) :mod ( z11 art ) ) )
(z0 / think-01
    :ARG0 (z1 / person
              :ARG1-of (z2 / include-91
                           :ARG2 (z3 / person
                                     :ARG1-of (z4 / employ-01))
                           :ARG3 (z5 / percentage-entity
                                     :value 21)))
    :ARG1 (z6 / form
              :ARG1-of (z7 / have-degree-91
                           :ARG2 (z8 / great)
                           :ARG3 (z9 / most))
              :domain (z10 / write-01)
              :mod (z11 / art)))
21 % of employees think writing is the greatest art form .
z2 :ARG3 z5
z5 :value 0
z1 :ARG1-of z2
z2 :ARG2 z3
z3 :ARG1-of z4
z0 :ARG0 z1
z7 :ARG2 z8
z7 :ARG3 z9
z6 :mod z11
z6 :ARG1-of z7
z6 :domain z10
z0 :ARG1 z6