!--a11y-->
Regular Identifiers 
A regular identifier is a character sequence starting with a letter followed by a sequence of letters, digits or the underscore sign. Although it can be typed in mixed case, it will be interpreted in upper case. That is the regular identifiers Hugo, hugo, HUGO name all the same database object.
An SQL reserved
keyword may
not be used as regular identifier The
Table
Editor
does not permit creating catalog objects with a name equal to a reserved
keyword.

|
<regular identifier> ::= <letter> ( <letter> | <digit> | '_' )*.
<letter>s are the 52 Latin letters 'a' to 'z' and 'A' to 'Z'
<digit> is a digit from '0' to '9'. |

|
SELECT col FROM dbtab WHERE DBTAB.COL = 'abc' |
Regular Identifiers. In this example, coland COL denominate the same column, dbtaband DBTABdenominate the same table.
