public CreateRelationalDatabaseRequest withMasterDatabaseName(String masterDatabaseName) {
        setMasterDatabaseName(masterDatabaseName);
        return this;
    }
<p>
The meaning of this parameter differs according to the database engine you use.
</p>
<p>
<b>MySQL</b>
</p>
<p>
The name of the database to create when the Lightsail database resource is created. If this parameter isn't
specified, no database is created in the database resource.
</p>
<p>
Constraints:
</p>
<ul>
<li>
<p>
Must contain 1 to 64 letters or numbers.
</p>
</li>
<li>
<p>
Must begin with a letter. Subsequent characters can be letters, underscores, or digits (0- 9).
</p>
</li>
<li>
<p>
Can't be a word reserved by the specified database engine.
</p>
<p>
For more information about reserved words in MySQL, see the Keywords and Reserved Words articles for <a
href="https://dev.mysql.com/doc/refman/5.6/en/keywords.html">MySQL 5.6</a>, <a
href="https://dev.mysql.com/doc/refman/5.7/en/keywords.html">MySQL 5.7</a>, and <a
href="https://dev.mysql.com/doc/refman/8.0/en/keywords.html">MySQL 8.0</a>.
</p>
</li>
</ul>
<p>
<b>PostgreSQL</b>
</p>
<p>
The name of the database to create when the Lightsail database resource is created. If this parameter isn't
specified, a database named <code>postgres</code> is created in the database resource.
</p>
<p>
Constraints:
</p>
<ul>
<li>
<p>
Must contain 1 to 63 letters or numbers.
</p>
</li>
<li>
<p>
Must begin with a letter. Subsequent characters can be letters, underscores, or digits (0- 9).
</p>
</li>
<li>
<p>
Can't be a word reserved by the specified database engine.
</p>
<p>
For more information about reserved words in PostgreSQL, see the SQL Key Words articles for <a
href="https://www.postgresql.org/docs/9.6/sql-keywords-appendix.html">PostgreSQL 9.6</a>, <a
href="https://www.postgresql.org/docs/10/sql-keywords-appendix.html">PostgreSQL 10</a>, <a
href="https://www.postgresql.org/docs/11/sql-keywords-appendix.html">PostgreSQL 11</a>, and <a
href="https://www.postgresql.org/docs/12/sql-keywords-appendix.html">PostgreSQL 12</a>.
</p>
</li>
</ul>

@param masterDatabaseName
       The meaning of this parameter differs according to the database engine you use.</p>
       <p>
       <b>MySQL</b>
       </p>
       <p>
       The name of the database to create when the Lightsail database resource is created. If this parameter
       isn't specified, no database is created in the database resource.
       </p>
       <p>
       Constraints:
       </p>
       <ul>
       <li>
       <p>
       Must contain 1 to 64 letters or numbers.
       </p>
       </li>
       <li>
       <p>
       Must begin with a letter. Subsequent characters can be letters, underscores, or digits (0- 9).
       </p>
       </li>
       <li>
       <p>
       Can't be a word reserved by the specified database engine.
       </p>
       <p>
       For more information about reserved words in MySQL, see the Keywords and Reserved Words articles for <a
       href="https://dev.mysql.com/doc/refman/5.6/en/keywords.html">MySQL 5.6</a>, <a
       href="https://dev.mysql.com/doc/refman/5.7/en/keywords.html">MySQL 5.7</a>, and <a
       href="https://dev.mysql.com/doc/refman/8.0/en/keywords.html">MySQL 8.0</a>.
       </p>
       </li>
       </ul>
       <p>
       <b>PostgreSQL</b>
       </p>
       <p>
       The name of the database to create when the Lightsail database resource is created. If this parameter
       isn't specified, a database named <code>postgres</code> is created in the database resource.
       </p>
       <p>
       Constraints:
       </p>
       <ul>
       <li>
       <p>
       Must contain 1 to 63 letters or numbers.
       </p>
       </li>
       <li>
       <p>
       Must begin with a letter. Subsequent characters can be letters, underscores, or digits (0- 9).
       </p>
       </li>
       <li>
       <p>
       Can't be a word reserved by the specified database engine.
       </p>
       <p>
       For more information about reserved words in PostgreSQL, see the SQL Key Words articles for <a
       href="https://www.postgresql.org/docs/9.6/sql-keywords-appendix.html">PostgreSQL 9.6</a>, <a
       href="https://www.postgresql.org/docs/10/sql-keywords-appendix.html">PostgreSQL 10</a>, <a
       href="https://www.postgresql.org/docs/11/sql-keywords-appendix.html">PostgreSQL 11</a>, and <a
       href="https://www.postgresql.org/docs/12/sql-keywords-appendix.html">PostgreSQL 12</a>.
       </p>
       </li>
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-lightsail/src/main/java/com/amazonaws/services/lightsail/model/CreateRelationalDatabaseRequest.java