59 lines
2.9 KiB
Plaintext
59 lines
2.9 KiB
Plaintext
StudyFeatures -- multiple entries possible for students pursuing several degrees at once, usually created upon LDAP login
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user UserId
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degree StudyDegreeId -- Abschluss, i.e. Master, Bachelor, etc.
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field StudyTermsId -- Fach, i.e. Informatics, Philosophy, etc.
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superField StudyTermsId Maybe
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type StudyFieldType -- Major or minor, i.e. Haupt-/Nebenfach
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semester Int
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firstObserved UTCTime Maybe
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lastObserved UTCTime default=now() -- last update from LDAP
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valid Bool default=true
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relevanceCached Bool default=false
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UniqueStudyFeatures user degree field type semester
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deriving Eq Show
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-- UniqueUserSubject ubuser degree field -- There exists a counterexample
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RelevantStudyFeatures
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term TermId
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studyFeatures StudyFeaturesId
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UniqueRelevantStudyFeatures term studyFeatures
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StudyDegree -- Studienabschluss
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key Int -- LMU-internal key
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shorthand Text Maybe -- admin determined shorthand
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name Text Maybe -- description given by LDAP
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Primary key -- column key is used as actual DB row key
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-- newtype Key StudyDegree = StudyDegreeKey' { unStudyDegreeKey :: Int }
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deriving Eq Show
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StudyTerms -- Studiengang
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key Int -- standardised key
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shorthand Text Maybe -- admin determined shorthand
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name Text Maybe -- description given by LDAP
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defaultDegree StudyDegreeId Maybe
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defaultType StudyFieldType Maybe
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Primary key -- column key is used as actual DB row key
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-- newtype Key StudyTerms = StudyTermsKey' { unStudyTermsKey :: Int }
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deriving Eq Ord Show
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StudySubTerms
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child StudyTermsId
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parent StudyTermsId
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UniqueStudySubTerms child parent
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StudyTermNameCandidate -- No one at LMU is willing and able to tell us the meaning of the keys for StudyDegrees and StudyTerms.
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-- Each LDAP login provides an unordered set of keys and an unordered set of plain text description with an unknown 1-1 correspondence.
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-- This table helps us to infer which key belongs to which plain text by recording possible combinations at login.
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-- If a login provides n keys and n plan texts, then n^2 rows with the same incidence are created, storing all combinations
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incidence TermCandidateIncidence -- random id, generated once per login to associate matching pairs
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key Int -- a possible key for the studyTermName or studySubTermName
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name Text -- studyTermName as plain text from LDAP
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deriving Show Eq Ord
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StudySubTermParentCandidate
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incidence TermCandidateIncidence
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key Int
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parent Int
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deriving Show Eq Ord
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StudyTermStandaloneCandidate
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incidence TermCandidateIncidence
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key Int
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deriving Show Eq Ord
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