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38 lines
1.2 KiB
38 lines
1.2 KiB
# YOPA
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Yopa is a relational database for cataloging things.
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The data model is user-editable through a web interface, together with the data.
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## Data model
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There are three kinds of entities in the database: objects, relations, and properties.
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Here is an example database schema that can be easily set up in Yopa:
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```
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,----quantity-----> Ingredient
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| - amount in the pantry
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| - e-shop link
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Recipe ------page X-----> Book
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- cook time - author(s)
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- difficulty - year
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- photo URI(s)
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```
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Relations link two objects. Properties are attached either to an object, or to a
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relation - this makes sense for relations that need additional information, such as a
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page number when referencing a book.
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Yopa implements four base data types: String, Integer, Decimal and Boolean. Properties
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may further be optional and/or multiple.
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## Web interface
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Yopa is the database engine. There can be any number of user interfaces to it. Presently,
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the `yopa-web` module provides a web interface with a built-in web server. Just run the
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binary and it will open your yopa database for editing. The file is created on the first
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change if it doesn't exist.
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