An identity column is a special column that is generated automatically from an implicit sequence. It can be used to generate key values. Similarly, the keyword DEFAULT can be used in UPDATE commands.
An index can be defined on more than one column of a table. For example, if you have a table of this form: A multicolumn GiST index can be used with query conditions that involve any subset of the ...
There's much to enjoy about the retirement years - and you don't need a million dollars to do so. Photo / 123rf Q: I quit my job to look after my terminally ill husband. I am 62 years old. We have ...
Drugs that induce reversible slowing of metabolic and physiological processes would have great value for organ preservation, especially for organs with high susceptibility to hypoxia-reperfusion ...