Oracle Database 19c: Program with PL/SQL 1z0-149 Question # 9 Topic 1 Discussion

Oracle Database 19c: Program with PL/SQL 1z0-149 Question # 9 Topic 1 Discussion

1z0-149 Exam Topic 1 Question 9 Discussion:
Question #: 9
Topic #: 1

Which two are true about lexical units? (Choose two.)


A.

Character literals are case-sensitive.


B.

Spaces can be embedded in delimiters.


C.

Identifiers include labels.


D.

A character literal with zero characters has the BOOLEAN value NULL.


E.

All user-defined identifiers must start with an alphabet.


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