diff -r f64255a88d66 -r 27a25f32048e src/main/java/de/uapcore/lightpit/dao/VersionDao.java
--- a/src/main/java/de/uapcore/lightpit/dao/VersionDao.java	Sat May 23 14:13:09 2020 +0200
+++ b/src/main/java/de/uapcore/lightpit/dao/VersionDao.java	Sun May 24 15:30:43 2020 +0200
@@ -30,6 +30,7 @@
 
 import de.uapcore.lightpit.entities.Project;
 import de.uapcore.lightpit.entities.Version;
+import de.uapcore.lightpit.entities.VersionStatistics;
 
 import java.sql.SQLException;
 import java.util.List;
@@ -44,4 +45,31 @@
      * @throws SQLException on any kind of SQL error
      */
     List<Version> list(Project project) throws SQLException;
+
+    /**
+     * Retrieves statistics about issues that arose in a version.
+     *
+     * @param version the version
+     * @return version statistics
+     * @throws SQLException on any kind of SQL error
+     */
+    VersionStatistics statsOpenedIssues(Version version) throws SQLException;
+
+    /**
+     * Retrieves statistics about issues that are scheduled for a version.
+     *
+     * @param version the version
+     * @return version statistics
+     * @throws SQLException on any kind of SQL error
+     */
+    VersionStatistics statsScheduledIssues(Version version) throws SQLException;
+
+    /**
+     * Retrieves statistics about issues that are resolved in a version.
+     *
+     * @param version the version
+     * @return version statistics
+     * @throws SQLException on any kind of SQL error
+     */
+    VersionStatistics statsResolvedIssues(Version version) throws SQLException;
 }