title: Enterprise Architect - how to extract nullability of a database table column?
body: <p>I have a database table defined in EA. In this table I have a column where NULL is allowed. When I use a script or an API to extract nullability from this column, I understand this should be done using the LowerBound and UpperBound values. When <code>LowerBound</code> is 0, it is a nullable field, if it is 1, NULL is not allowed.</p>
  
  <p><a href="https://i.stack.imgur.com/KpxH0.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/KpxH0.png" alt="enter image description here"></a></p>
  
  <p>However, when I set the NULL field, LowerBound is still 1, as noted on the following picture:</p>
  
  <p><a href="https://i.stack.imgur.com/GiErv.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/GiErv.png" alt="enter image description here"></a></p>
  
  <p>How can I correctly extract nullability from a database column?</p>