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POHow to work with liquibase, a concrete example
 

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    <p>Following the quickstart on <a href="http://www.liquibase.org/quickstart" rel="noreferrer">liquibase</a> i've created a changeset (very dumb :) )</p> <p>Code:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;databaseChangeLog xmlns="http://www.liquibase.org/xml/ns/dbchangelog/1.6" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog/1.6 http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-1.6.xsd"&gt; &lt;changeSet id="1" author="me"&gt; &lt;createTable tableName="first_table"&gt; &lt;column name="id" type="int"&gt; &lt;constraints primaryKey="true" nullable="false"/&gt; &lt;/column&gt; &lt;column name="name" type="varchar(50)"&gt; &lt;constraints nullable="false"/&gt; &lt;/column&gt; &lt;/createTable&gt; &lt;createTable tableName="new_table"&gt; &lt;column name="id" type="int"&gt; &lt;constraints primaryKey="true" nullable="false"/&gt; &lt;/column&gt; &lt;/createTable&gt; &lt;/changeSet&gt; &lt;/databaseChangeLog&gt; </code></pre> <p>I've created a clean schema and i've launched the migrate command.</p> <p>Liquibase created the database, with the support tables databasechangelog and ..lock.</p> <p>Now how i can track the changes?? i've modified the changeset adding a new createTable element but when i try the command "update" liquibase tells me this</p> <pre><code>Migration Failed: Validation Failed: 1 change sets check sum </code></pre> <p>so i don't think to have understood the way to work with liquibase.</p> <p>Someone may point me to the right direction??</p> <p>Thanks</p>
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