A new chart for highly charged ions (HCIs) has been proposed, aiming to replicate the conventional periodic table’s ...

Tracking change activity over time requires complicating what might otherwise be simple data structures. One approach that many like to employ involves simply adding a start or effective date onto a ...

Without a defined primary key, a table has no semantic under­pinning; it is meaningless. Most things are unique in that they can be identified. Transactions are unique because even when every­thing ...