Representing Tables (cont)
Details of catalog tables representing database tables
pg_class holds core information about tables
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relname, relnamespace, reltype, relowner, ...
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relkind, relnatts, relhaspkey, relacl[], ...
pg_attribute contains information about attributes
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attrelid, attname, atttypid, attnum, ...
pg_type contains information about types
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typname, typnamespace, typowner, typlen, ...
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typtype, typrelid, typinput, typoutput, ...
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