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ORIENTED ARCHITECTURE DATA
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@pithyless
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OPINIONS
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ǡ
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ǡ Dž
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ǽ ǡ Dž
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ȓ ǽ ǡ Dž
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ȓ ǽ ǡ Dž
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“PRODUCT”
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INFORMATION SYSTEMS
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INFORMATION SYSTEMS
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TECHNICAL DEBT
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FUNCTIONAL PROGRAMMING
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PREACHED TO COLLEAGUES
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PREACHED TO AND FAILED. COLLEAGUES
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SOA MVC DRYTDD
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SNAKE OIL
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ENCAPSULATION
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MVC
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MVC
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SOA
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SOA MVC MVC MVC MVC
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DUPLICATION
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SOURCE OF TRUTH
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RELIABILITY
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CONFIDENCE
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TYPES / SCHEMAS ASSERTIONS PROPERTY TESTING
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JUST TOOLS
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NOT RELIGION
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DATA
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DATA QUEUES
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DATA QUEUES
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DATA QUEUES
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PROJECTS FAIL
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1. Not understanding the domain.
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1. Not understanding the domain. 2. Not modeling the domain.
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1. Not understanding the domain. 2. Not modeling the domain. 3. Breaking #1 or #2, and failing to adapt.
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SOUL-SEARCHING
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1. model essence of things
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1. model essence of things 2. don’t violate physics
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/ .
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1. DATA 2. FLOW 3. ???? 4. PROFIT!!!
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1. DATA
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immutable
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real world is immutable
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real world is immutable
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semantic
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recursive
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#scalar string boolean number
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#identity symbol keyword
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#collection list map vector set
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#custom #uuid “de305d54-…” #inst “2016-02-18…”
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2. FLOW
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f(A)=B
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A f B
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f(A)=B
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3. ???
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FACTS ➟LOG QUESTIONS ANSWERS ➟
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FACTS
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You must be shapeless, formless, like water. Water can drip and it can crash.
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FLAT DATA WATER
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[e a v t]
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[e a v t true?]
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[1 :name “Bob”]
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[1 :name “Bob” 100]
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[1 :name “Bob” 100 true]
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[1 :name “Bob” 100 true] [1 :likes “Cats” 100 true] … [1 :likes “Dogs” 111 true]
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[1 :name “Bob” 100 true] [1 :likes “Cats” 100 true] … [1 :likes “Cats” 111 false] [1 :likes “Dogs” 111 true]
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[1 :name “Bob” 100 true] [2 :name “Mary” 100 true] … [1 :likes 2 111 true] … [2 :likes 1 222 true]
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[1 :likes 2] [1 :likes [:name “Mary”]]
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[e a v t]
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LOG
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APPEND ONLY
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TOTAL ORDER
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BUSINESS DATA SOURCE CODE
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Q & A
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Log Q
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Log Q DB Q DB Q DB
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QUERIES!
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DO YOU SQL BRO?
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AUDITING
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LOG #index #index
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RELATIONAL (ROW)
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[e a v t] #index #index
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[:find ?name ?age :in $db ?id :where [?id :actor/name ?name] [?id :actor/age ?age]]
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[:find ?name ?age :in $db ?id :where [?id :actor/name ?name] [?id :actor/age ?age]]
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[:find ?name ?age :in $db ?id :where [?id :actor/name ?name] [?id :actor/age ?age]]
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[:find ?name ?age :in $db ?id :where [?id :actor/name ?name] [?id :actor/age ?age]]
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[:find ?name ?age :in $db ?id :where [?id :actor/name ?name] [?id :actor/age ?age]]
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RELATIONAL (COLUMN)
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[a e v t] #index #index
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[:find (avg ?age) :in $db :where [_ :actor/age ?age]]
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GRAPH
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[a v e t] #index
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[:find ?title :in $db ?first ?second :where [?a1 :actor/name ?first] [?a2 :actor/name ?second] [?a1 :actor/movies ?m] [?a2 :actor/movies ?m] [?m :movie/title ?title]]
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SEARCH
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inverted #index #index
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[:find ?m ?title ?score :in $db ?query :where [(fulltext $db :movie/title ?query) [[?m ?title _ ?score]]]]
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[e a v t]
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4. PROFIT!
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REAL WORLD
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STREAM TREEMESH
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ROI
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THEORY APPLIED
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QUEUES
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Learn Datalog Today .org
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SIMULATION/ PROPERTY TESTING
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LAMBDA ARCHITECTURE
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@martinkl
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DATOMIC
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OM/NEXT
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ONEMORE THING
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CRDT
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EOF
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@pithyless