Marcadores
relational model
network model
hierarchical model
data model
data layer
business logic
presentation layer
3-tier
2-tier
server
client
kmeans
customer segmentation
gfs
map reduce
big data
division/remainder
folding
mid square
hashing
indexed sequential
direct organization
sequential organization
advantages and disadvantages
external level
conceptual level
internal schema
database abstraction
license
linux
gnu
gpl
open source
dba
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