type tbl = [ `RefObj| `RefSort| `RefRel| `ObjectName| `Owners| `Count]

val create_tables: (string * tbl) list -> string list
    
val create_indexes: (string * tbl) list -> string list

val drop_tables: (string * tbl) list -> string list

val drop_indexes: (string * tbl) list -> string list

val rename_tables: (string * string) list -> string list