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1
vote
0answers
89 views
+50

What is the common symbol of an arbitrary query?

For a theoretical database paper i tried to figure out if there is a is general symbol for an arbitrary Query that is used in literature. Can anyone tell me if there is any symbol?
1
vote
2answers
65 views
+50

MongoDB - Mongorestore is not working as expected

A Very Good Day, I have the user in the mongodb like below who has the superuser privileges (I confirmed the role setting using show users command) { "_id" : "admin.mongoadmin", "user" : "...
1
vote
0answers
16 views
+50

How to handle schema changes in source systems when running an ETL?

How do people typically handle schema changes in source systems when running an ETL as part of an EDW? For example when a column you were operating on disappears and your ETL breaks.