The highly efficient and rigorous packing technology used in Agilent J&W packed GC columns assures column-to-column reproducibility and ultimate efficiency, while the UltiMetal treated stainless ...
In general, liquid-liquid extraction is applied where alternative separation technologies such as distillation ... to agitated columns, it includes mixer-settlers and packed columns.
A generated column is a special column that is always computed from other columns. Thus, it is for columns what a view is for tables. There are two kinds of generated columns: stored and virtual. A ...
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 ...