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Database Programming with PL/SQL 04/01/2019 2-2: Recognizing PL/SQL Lexical Units Practice Activities Vocabulary Identify the vocabulary word for each definition below: Numeric Literal An explicit numeric, character string, date, or Boolean value that is not represented by an identifier. Delimiter Symbols that have special meaning to an Oracle database. Reserved Words Words that have special meaning to an Oracle database and cannot be used as identifiers. Comments Describe the purpose and use of each code segment and are ignored by PL/SQL. Literals Building blocks of any PL/SQL block and are sequences of characters including letters, digits, tabs, returns, and symbols. Identifiers A name, up to 30 characters in length, given to a PL/SQL object. Try It / Solve It Questions 1. Identify each of the following identifiers as valid or invalid. If invalid, specify why. 2 #number Invalid Doesn’t begin with a letter Copyright © 2018, Oracle and/or its affiliates. All rights reserved. Oracle and Java are registered trademarks of Oracle and/or its affiliates. Other names may be trademarks of their
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