prepared GraphQL exercises
main content migrated, solutions follow
prepared graphdb/neo4j exercises
prepared mongodb intro exercise
changed <no T> to <abort T>
added markers in diagram where crashes happen
two phase commit exercises ready
removed indexes solutions from queries file
prepared optimization exercises
explaining explain docu links added
Goal text adjusted and sql formatting applied
Index exercises prepared
explicitly set encoding for COPY imports
Release including datastructures changes
Datastructures exercises prepared
Updated and corrected Triggers solutions
Integrated text correction
Exercises for week 5 prepared and solutions updated
stored procedures follow up exercise finished
gitlab online local urls fixed