1 Mandatory-to-Mandatory relationship 2 Mandatory-to-optional relationship 3Many-to-many relationship 4 One-to-many relationship 5 One-to-one relationship 6 Self-describing 7...

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1 Mandatory-to-Mandatory relationship 2 Mandatory-to-optional relationship 3Many-to-many relationship 4 One-to-many relationship 5 One-to-one relationship 6 Self-describing 7 Must constraint 8 Must cover constraint 9 Must not constraint 10 Pull report 11 Push report 12 Reserved word

Please give definitions for these according to DATABASE CONCEPTS.