Handling Attributes containing foreign key in EAV db modelling
I am trying to implement taxation feature for my e-commerce app.
The tax has some general configuration values like, tax_country, shipping_tax, label etc.
Since these values can change in future I am using Entity Attribute Value modeling.
I have seen the approach from the following blog.
So I have the following tables:
Entity: contains all the entities.
Attribute: contains attributes for entities.
Metadata: contains some metadata for attributes common to allattributes.- For every data type, I will have different tables which will store values for the attributes
attribute_value_int,attribute_value_charetc.
So attributes are stored in the respective attribute_value table.
However, there are some attributes which are like foreign keys.
e.g. tax_country attribute contains the id of the country from the country table.
How should I go about handling attributes which are basically relationships with other tables?
database postgresql entity-attribute-value
asked 2 days ago
Arjun SinghArjun Singh
384211
add a comment |
I am trying to implement taxation feature for my e-commerce app.
The tax has some general configuration values like, tax_country, shipping_tax, label etc.
Since these values can change in future I am using Entity Attribute Value modeling.
I have seen the approach from the following blog.
So I have the following tables:
Entity: contains all the entities.
Attribute: contains attributes for entities.
Metadata: contains some metadata for attributes common to allattributes.- For every data type, I will have different tables which will store values for the attributes
attribute_value_int,attribute_value_charetc.
So attributes are stored in the respective attribute_value table.
However, there are some attributes which are like foreign keys.
e.g. tax_country attribute contains the id of the country from the country table.
How should I go about handling attributes which are basically relationships with other tables?
database postgresql entity-attribute-value
asked 2 days ago
Arjun SinghArjun Singh
384211
add a comment |
I am trying to implement taxation feature for my e-commerce app.
The tax has some general configuration values like, tax_country, shipping_tax, label etc.
Since these values can change in future I am using Entity Attribute Value modeling.
I have seen the approach from the following blog.
So I have the following tables:
Entity: contains all the entities.
Attribute: contains attributes for entities.
Metadata: contains some metadata for attributes common to allattributes.- For every data type, I will have different tables which will store values for the attributes
attribute_value_int,attribute_value_charetc.
So attributes are stored in the respective attribute_value table.
However, there are some attributes which are like foreign keys.
e.g. tax_country attribute contains the id of the country from the country table.
How should I go about handling attributes which are basically relationships with other tables?
database postgresql entity-attribute-value
asked 2 days ago
Arjun SinghArjun Singh
384211
I am trying to implement taxation feature for my e-commerce app.
The tax has some general configuration values like, tax_country, shipping_tax, label etc.
Since these values can change in future I am using Entity Attribute Value modeling.
I have seen the approach from the following blog.
So I have the following tables:
Entity: contains all the entities.
Attribute: contains attributes for entities.
Metadata: contains some metadata for attributes common to allattributes.- For every data type, I will have different tables which will store values for the attributes
attribute_value_int,attribute_value_charetc.
So attributes are stored in the respective attribute_value table.
However, there are some attributes which are like foreign keys.
e.g. tax_country attribute contains the id of the country from the country table.
How should I go about handling attributes which are basically relationships with other tables?
database postgresql entity-attribute-value
database postgresql entity-attribute-value
asked 2 days ago
Arjun SinghArjun Singh
384211
asked 2 days ago
Arjun SinghArjun Singh
384211
asked 2 days ago
Arjun SinghArjun Singh
384211
asked 2 days ago
Arjun SinghArjun Singh
384211
asked 2 days ago
Arjun SinghArjun Singh
384211
384211
add a comment |
add a comment |
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