DataCamp

Docstring formats google style Numpydoc reStructuredText EpyText Use functions to avoid repetition

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API ref: https://docs.pytest.org/en/6.2.x/reference.htmlAssert: 뒤의 조건이 true가 아니면 asserterror 리턴ref: https://wikidocs.net/21050general inform

Sample codes Use of init

A DAG stands for Directed Acyclic GraphIn Airflow, this represents the set of tasks that make up your workflowConsists of the tasks and the dependenci

datepart() datename()parts : year/month/dayday of yearday of weekdateadd : add dates with intervals: useful for converting one data type to another da

Remember, the most common date/time data types are:datetimedatetimedatetime2smalldatetimebinaryimagecursorrowversionuniqueidentifierxmlspatial geometr

어떻게 데이터를 관리하고 organize(어울리는 한국어 생각안남..) 구조화?할 것인가Schemas: 데이터를 어떻게 logically organized 할 것인가Normalization: 데이터가 반드시 최소 독립적, 최소 중복적(redundancy)이어야 하는 것

normalization eliminates data redundancyEnforces data consistencySafer updating, removing, and insertingEasier to redesign by extendingOLTP : typicall

ERROR_NUMBER() : returns the number of the errorERROR_SEVERITY() : returns the error severity (11-19)ERROR_STATE() : returns the state of the errorERR

Scala fuses OOP and FP : scala is scalableobject orientedevery val is an objevery operation is a method callscala is functionalfuncs are first-class v

clustered computing: collection of resources of multiple machinesparallel computingL simultaneous computationdistributed computing: collection of node

python variablesmutableflexibilitypotential for issues with concurrencylikely adds complexityimmutabilitya component of functional programmingdefined