Module Database.ERD.Goodies

Exported Functions

erdName :: ERD -> String   

The name of an ERD.

Further infos:

• solution complete, i.e., able to compute all solutions

entityName :: Entity -> String   

The name of an entity.

Further infos:

• solution complete, i.e., able to compute all solutions

isEntityNamed :: String -> Entity -> Bool   

Is this an entity with a given name?

hasForeignKey :: String -> Entity -> Bool   

Has the entity an attribute with a foreign key for a given entity name?

foreignKeyAttributes :: String -> [Attribute] -> [Attribute]   

Returns the attributes that are a foreign key of a given entity name.

entityAttributes :: Entity -> [Attribute]   

The attributes of an entity

Further infos:

• solution complete, i.e., able to compute all solutions

attributeName :: Attribute -> String   

The name of an attribute.

Further infos:

• solution complete, i.e., able to compute all solutions

attributeDomain :: Attribute -> Domain   

The domain of an attribute.

Further infos:

• solution complete, i.e., able to compute all solutions

hasDefault :: Domain -> Bool   

Has an attribute domain a default value?

Further infos:

• partially defined

isForeignKey :: Attribute -> Bool   

isNullAttribute :: Attribute -> Bool   

Has an attribute a null value?

Further infos:

• solution complete, i.e., able to compute all solutions

cardMinimum :: Cardinality -> Int   

The minimum value of a cardinality.

Further infos:

• solution complete, i.e., able to compute all solutions

cardMaximum :: Cardinality -> Int   

The maximum value of a cardinality (provided that it is not infinite).

Further infos:

• partially defined

showERD :: Int -> ERD -> String   

A simple pretty printer for ERDs.

combineIds :: [String] -> String   

Combines a non-empty list of identifiers into a single identifier. Used in ERD transformation and code generation to create names for combined objects, e.g., relationships and foreign keys.

Further infos:

• partially defined

readERDFromProgram :: String -> IO ERD   

Reads the ERD defined in a Curry program (as a top-level operation of type Database.ERD.ERD). This is done by compiling the Curry program with an auxiliary operation and processing the output of the program.

storeERDFromProgram :: String -> IO String   

Writes the ERD defined in a Curry program (as a top-level operation of type Database.ERD.ERD) in a term file and return the name of the term file.