One of the trickiest aspects of relational database management can be dealing with missing information. The standard method of representing missing information is to set the “value” to null. A null ...

When databases are designed, they serve as semantic expressions of the organizations that employ them. Those expressions describe the data items of importance and articulate the business rules as the ...

I'm getting a date from an Access database as part of a SELECT query.<BR>Sometimes in the database, this field is left blank.<BR>In these case, writing the field to the asp page gives me ...

Have you ever stared at a massive dataset, only to realize it’s riddled with empty columns that serve no purpose? It’s a frustrating scenario—one that wastes time, clutters your workflow, and makes ...

mysql> create database pl_sql; Query OK, 1 row affected (0.01 sec) mysql> use pl_sql; Database changed mysql> CREATE TABLE Students ( -> student_id INT PRIMARY KEY, -> first_name VARCHAR(50) NOT NULL, ...