3 ms·
It means that everything a relational database is capable of (from CS theory) can be done with a single column of values per table. Note that each such table al
by d110af5ccf 6y ago
It means that everything a relational database is capable of (from CS theory) can be done with a single column of values per table. Note that each such table also has a "column" of primary keys; in other words, it's a simple K -> V mapping.
Also note that just because you can do something doesn't mean that it will be efficient, or that it will be enjoyable to work with.
- dragonwriter 6y ago> It means that everything a relational database is capable of (from CS theory) can be done with a single column of values per table. Note that each such table also has a "column" of primary keys So, in other words, it's a two column table (“primary key” aren't some kind of virtual column, either in concrete databases or in relational theory.) Calling a database with two columns one of which is the primary key a one-column table is...just wrong.