diff --git a/gemeinsamforschen/src/main/java/unipotsdam/gf/modules/journal/model/dao/JournalDAOImpl.java b/gemeinsamforschen/src/main/java/unipotsdam/gf/modules/journal/model/dao/JournalDAOImpl.java
index 0ea368909eb9cdb4679bf36b77d51ea11dc490e6..a0561e81639ef40ef3d2394980c90c618680c381 100644
--- a/gemeinsamforschen/src/main/java/unipotsdam/gf/modules/journal/model/dao/JournalDAOImpl.java
+++ b/gemeinsamforschen/src/main/java/unipotsdam/gf/modules/journal/model/dao/JournalDAOImpl.java
@@ -26,7 +26,7 @@ public class JournalDAOImpl implements JournalDAO {
         connection.connect();
 
         // build and execute request
-        String request = "INSERT INTO journals (`id`, `author`, `project`, `text`, `visibility`,`category`, `open` ) VALUES (?,?,?,?,?,?,?);";
+        String request = "INSERT INTO journals (`id`, `studentId`, `projectId`, `text`, `visibility`,`category`, `open` ) VALUES (?,?,?,?,?,?,?);";
         connection.issueInsertOrDeleteStatement(request, uuid, journal.getStudentIdentifier().getStudentId(),
                 journal.getStudentIdentifier().getProjectId(), journal.getEntryMD(), journal.getVisibility(), journal.getCategory(), true);
 
@@ -105,7 +105,7 @@ public class JournalDAOImpl implements JournalDAO {
         connection.connect();
 
         // build and execute request
-        String request = "SELECT * FROM journals WHERE project= ? AND (author = ? OR visibility = \"ALL\" or visibility = \"GROUP\");";
+        String request = "SELECT * FROM journals WHERE projectId= ? AND (studentId = ? OR visibility = \"ALL\" or visibility = \"GROUP\");";
         VereinfachtesResultSet rs = connection.issueSelectStatement(request, project, student);
 
         while (rs.next()) {
@@ -128,7 +128,7 @@ public class JournalDAOImpl implements JournalDAO {
         connection.connect();
 
         // build and execute request
-        String request = "SELECT * FROM journals WHERE author= ?;";
+        String request = "SELECT * FROM journals WHERE studentId= ?;";
         VereinfachtesResultSet rs = connection.issueSelectStatement(request, student);
 
         while (rs.next()) {
@@ -175,7 +175,7 @@ public class JournalDAOImpl implements JournalDAO {
         connection.connect();
 
         // build and execute request
-        String request = "SELECT * FROM journals WHERE project = ? AND open = ?;";
+        String request = "SELECT * FROM journals WHERE projectId = ? AND open = ?;";
         VereinfachtesResultSet rs = connection.issueSelectStatement(request, project.getId(), true);
 
         while (rs.next()) {
@@ -199,8 +199,8 @@ public class JournalDAOImpl implements JournalDAO {
 
         String id = rs.getString("id");
         long timestamp = rs.getTimestamp(2).getTime();
-        String student = rs.getString("author");
-        String project = rs.getString("project");
+        String student = rs.getString("studentId");
+        String project = rs.getString("projectId");
         String text = rs.getString("text");
         String visibility = rs.getString("visibility");
         String category = rs.getString("category");
diff --git a/gemeinsamforschen/src/main/java/unipotsdam/gf/modules/journal/model/dao/ProjectDescriptionDAOImpl.java b/gemeinsamforschen/src/main/java/unipotsdam/gf/modules/journal/model/dao/ProjectDescriptionDAOImpl.java
index c0b07344e684abc9a2912d02f8be0b2486e12d06..6bd193c998db83cb1cf0a8d18d5c0703e5a24f51 100644
--- a/gemeinsamforschen/src/main/java/unipotsdam/gf/modules/journal/model/dao/ProjectDescriptionDAOImpl.java
+++ b/gemeinsamforschen/src/main/java/unipotsdam/gf/modules/journal/model/dao/ProjectDescriptionDAOImpl.java
@@ -1,7 +1,5 @@
 package unipotsdam.gf.modules.journal.model.dao;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import unipotsdam.gf.core.database.mysql.MysqlConnect;
 import unipotsdam.gf.core.database.mysql.VereinfachtesResultSet;
 import unipotsdam.gf.core.management.project.Project;
@@ -28,7 +26,7 @@ public class ProjectDescriptionDAOImpl implements ProjectDescriptionDAO {
         connection.connect();
 
         // build and execute request
-        String request = "INSERT INTO projectdescription(`id`, `author`, `project`, `text`, `open`) VALUES (?,?,?,?,?);";
+        String request = "INSERT INTO projectdescription(`id`, `studentId`, `projectId`, `text`, `open`) VALUES (?,?,?,?,?);";
         connection.issueInsertOrDeleteStatement(request, uuid, projectDescription.getStudent().getStudentId(),projectDescription.getStudent().getProjectId(),projectDescription.getDescriptionMD(),true);
 
         //close connection
@@ -57,7 +55,7 @@ public class ProjectDescriptionDAOImpl implements ProjectDescriptionDAO {
         connection.connect();
 
         // build and execute request
-        String request = "SELECT * FROM projectdescription WHERE author = ? AND project = ?;";
+        String request = "SELECT * FROM projectdescription WHERE studentId = ? AND projectId = ?;";
         VereinfachtesResultSet rs = connection.issueSelectStatement(request, studentIdentifier.getStudentId(),studentIdentifier.getProjectId());
 
         if (rs != null && rs.next()) {
@@ -113,7 +111,7 @@ public class ProjectDescriptionDAOImpl implements ProjectDescriptionDAO {
         connection.connect();
 
         // build and execute request
-        String request = "DELETE FROM projectdescription WHERE author = ? AND project = ?;";
+        String request = "DELETE FROM projectdescription WHERE studentId = ? AND projectId = ?;";
         connection.issueInsertOrDeleteStatement(request, studentIdentifier.getStudentId(),studentIdentifier.getProjectId());
 
         // close connection
@@ -145,7 +143,7 @@ public class ProjectDescriptionDAOImpl implements ProjectDescriptionDAO {
         connection.connect();
 
         // build and execute request
-        String request = "SELECT * FROM projectdescription WHERE project = ? AND open = ?;";
+        String request = "SELECT * FROM projectdescription WHERE projectId = ? AND open = ?;";
         VereinfachtesResultSet rs = connection.issueSelectStatement(request, project.getId(), true);
 
         while (rs.next()) {
@@ -161,8 +159,8 @@ public class ProjectDescriptionDAOImpl implements ProjectDescriptionDAO {
     private ProjectDescription getDescriptionFromResultSet(VereinfachtesResultSet rs) {
         String id = rs.getString("id");
         long timestamp = rs.getTimestamp(2).getTime();
-        String author = rs.getString("author");
-        String project = rs.getString("project");
+        String author = rs.getString("studentId");
+        String project = rs.getString("projectId");
         String text = rs.getString("text");
         boolean open = rs.getBoolean("open");
 
diff --git a/gemeinsamforschen/src/scripts/dbschema/journal.sql b/gemeinsamforschen/src/scripts/dbschema/journal.sql
index 16f050b3c5bba8230a1e136ffa4c86876c9f935d..e8e9ed5f3ab675341ce60e875c9611546c83f3a5 100644
--- a/gemeinsamforschen/src/scripts/dbschema/journal.sql
+++ b/gemeinsamforschen/src/scripts/dbschema/journal.sql
@@ -4,8 +4,8 @@ CREATE TABLE if not exists `journals` (
   `id`         varchar(400) NOT NULL,
   `timestamp`  timestamp    NOT NULL DEFAULT CURRENT_TIMESTAMP
   ON UPDATE CURRENT_TIMESTAMP,
-  `author`     varchar(400) NOT NULL,
-  `project`    varchar(400) NOT NULL,
+  `studentId`     varchar(400) NOT NULL,
+  `projectId`    varchar(400) NOT NULL,
   `text`       text,
   `visibility` varchar(50),
   `category`   varchar(50),
@@ -18,8 +18,8 @@ CREATE TABLE if not exists `projectDescription` (
   `id`         varchar(400) NOT NULL,
   `timestamp`  timestamp    NOT NULL DEFAULT CURRENT_TIMESTAMP
   ON UPDATE CURRENT_TIMESTAMP,
-  `author`     varchar(400) NOT NULL,
-  `project`    varchar(400) NOT NULL,
+  `studentId`     varchar(400) NOT NULL,
+  `projectId`    varchar(400) NOT NULL,
   `text`       text,
   `open`       TINYINT(1)
 )
diff --git a/gemeinsamforschen/src/test/java/unipotsdam/gf/modules/journal/model/dao/JournalDAOImplTest.java b/gemeinsamforschen/src/test/java/unipotsdam/gf/modules/journal/model/dao/JournalDAOImplTest.java
index 008ec65f6695807383dfcf4290acc293ef65e41a..d7d201f69c8a72f99538b3ba56cf9a3c32947891 100644
--- a/gemeinsamforschen/src/test/java/unipotsdam/gf/modules/journal/model/dao/JournalDAOImplTest.java
+++ b/gemeinsamforschen/src/test/java/unipotsdam/gf/modules/journal/model/dao/JournalDAOImplTest.java
@@ -31,8 +31,7 @@ public class JournalDAOImplTest {
     public void createJournal() {
 
         // Create Journal
-        Journal createJournal = testJournal;
-        journalDAO.createJournal(createJournal);
+        journalDAO.createJournal(testJournal);
 
         connection.connect();
 
@@ -108,13 +107,12 @@ public class JournalDAOImplTest {
 
     @Test
     public void deleteJournal() {
-        Journal deleteJournal = testJournal;
 
         //createJournal
         connection.connect();
 
         // build and execute request
-        create(deleteJournal);
+        create(testJournal);
 
         //check if Journal was added
         ArrayList<Journal> resultJournals = getJournals();
@@ -138,14 +136,13 @@ public class JournalDAOImplTest {
     @Test
     public void getJournal() {
 
-        //create Journal
-        Journal getJournal = testJournal;
+
         //createJournal
 
         connection.connect();
 
         // build and execute request
-        create(getJournal);
+        create(testJournal);
 
         //get that Journal
         Journal resultJournal = journalDAO.getJournal(testId);
@@ -224,8 +221,7 @@ public class JournalDAOImplTest {
         connection.connect();
 
         //create Journal
-        Journal closeJournal = testJournal;
-        create(closeJournal);
+        create(testJournal);
 
         Journal resultJournal = getJournals().get(0);
 
@@ -277,7 +273,7 @@ public class JournalDAOImplTest {
     //utility
 
     private ArrayList<Journal> getJournals() {
-        String request = "SELECT * FROM journals WHERE project= ?;";
+        String request = "SELECT * FROM journals WHERE projectId= ?;";
         VereinfachtesResultSet rs = connection.issueSelectStatement(request, testProject);
 
         ArrayList<Journal> resultJournals = new ArrayList<>();
@@ -288,7 +284,7 @@ public class JournalDAOImplTest {
     }
 
     private void create(Journal getJournal) {
-        String createRequest = "INSERT INTO journals (`id`, `author`, `project`, `text`, `visibility`,`category`, `open` ) VALUES (?,?,?,?,?,?,?);";
+        String createRequest = "INSERT INTO journals (`id`, `studentId`, `projectId`, `text`, `visibility`,`category`, `open` ) VALUES (?,?,?,?,?,?,?);";
         connection.issueInsertOrDeleteStatement(createRequest, getJournal.getId(), getJournal.getStudentIdentifier().getStudentId(),
                 getJournal.getStudentIdentifier().getProjectId(), getJournal.getEntryMD(), getJournal.getVisibility(), getJournal.getCategory(), getJournal.isOpen());
     }
@@ -304,8 +300,8 @@ public class JournalDAOImplTest {
 
         String id = rs.getString("id");
         long timestamp = rs.getTimestamp(2).getTime();
-        String student = rs.getString("author");
-        String project = rs.getString("project");
+        String student = rs.getString("studentId");
+        String project = rs.getString("projectId");
         String text = rs.getString("text");
         String visibility = rs.getString("visibility");
         String category = rs.getString("category");
diff --git a/gemeinsamforschen/src/test/java/unipotsdam/gf/modules/journal/model/dao/LinkDAOImplTest.java b/gemeinsamforschen/src/test/java/unipotsdam/gf/modules/journal/model/dao/LinkDAOImplTest.java
index 82b1b95d2e5711e2df937329a858027e26e3e982..151b6e7945671bcbb45c8d036a0b55cda4723915 100644
--- a/gemeinsamforschen/src/test/java/unipotsdam/gf/modules/journal/model/dao/LinkDAOImplTest.java
+++ b/gemeinsamforschen/src/test/java/unipotsdam/gf/modules/journal/model/dao/LinkDAOImplTest.java
@@ -12,14 +12,14 @@ import static org.junit.Assert.assertFalse;
 
 public class LinkDAOImplTest {
 
-    MysqlConnect connection = new MysqlConnect();
-    LinkDAO linkDAO = new LinkDAOImpl();
-
-    String testId = "-1";
-    String testProjectDescription = "testproject";
-    String testName = "testname";
-    String testLink = "https://www.test.de";
-    Link testLinkObj = new Link(testId, testProjectDescription, testName, testLink);
+    private final MysqlConnect connection = new MysqlConnect();
+    private final LinkDAO linkDAO = new LinkDAOImpl();
+
+    private final String testId = "-1";
+    private final String testProjectDescription = "testproject";
+    private final String testName = "testname";
+    private final String testLink = "https://www.test.de";
+    private final Link testLinkObj = new Link(testId, testProjectDescription, testName, testLink);
 
     @Test
     public void addLink() {
diff --git a/gemeinsamforschen/src/test/java/unipotsdam/gf/modules/journal/model/dao/ProjectDescriptionImplDAOTest.java b/gemeinsamforschen/src/test/java/unipotsdam/gf/modules/journal/model/dao/ProjectDescriptionImplDAOTest.java
index c63a1b8d70c2fd9251cab2852516f55a11966741..bcc98003103ad7c5d13e95336266e32b67657595 100644
--- a/gemeinsamforschen/src/test/java/unipotsdam/gf/modules/journal/model/dao/ProjectDescriptionImplDAOTest.java
+++ b/gemeinsamforschen/src/test/java/unipotsdam/gf/modules/journal/model/dao/ProjectDescriptionImplDAOTest.java
@@ -9,21 +9,19 @@ import unipotsdam.gf.modules.journal.model.ProjectDescription;
 
 import java.util.ArrayList;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.*;
 
 public class ProjectDescriptionImplDAOTest {
 
     private final ProjectDescriptionDAO descriptionDAO = new ProjectDescriptionDAOImpl();
     private final MysqlConnect connection = new MysqlConnect();
 
-    private String testId = "-1";
-    private String testStudent = "testStudent";
-    private String testDescription = "testDescription";
-    private String testProjekt = "testProjekt";
+    private final String testId = "-1";
+    private final String testStudent = "testStudent";
+    private final String testDescription = "testDescription";
+    private final String testProjekt = "testProjekt";
 
-    private ProjectDescription testProjectDescription = new ProjectDescription(testId, testStudent, testDescription, testProjekt, null /*Links are added in Service*/);
+    private final ProjectDescription testProjectDescription = new ProjectDescription(testId, testStudent, testDescription, testProjekt, null /*Links are added in Service*/);
 
     @Test
     public void createDescription() {
@@ -82,9 +80,7 @@ public class ProjectDescriptionImplDAOTest {
     public void getDescriptionSI() {
         connection.connect();
 
-        ProjectDescription getDescription = testProjectDescription;
-
-        create(getDescription);
+        create(testProjectDescription);
 
         ProjectDescription result = descriptionDAO.getDescription(new StudentIdentifier(testProjekt, testStudent));
 
@@ -101,9 +97,7 @@ public class ProjectDescriptionImplDAOTest {
     public void getDescriptionID() {
         connection.connect();
 
-        ProjectDescription getDescription = testProjectDescription;
-
-        create(getDescription);
+        create(testProjectDescription);
 
         ProjectDescription result = descriptionDAO.getDescription(testId);
 
@@ -120,9 +114,7 @@ public class ProjectDescriptionImplDAOTest {
     public void deleteDescription() {
         connection.connect();
 
-        ProjectDescription deleteDescription = testProjectDescription;
-
-        create(deleteDescription);
+        create(testProjectDescription);
 
         ArrayList<ProjectDescription> resultDescriptions = getProjectDescription();
 
@@ -143,9 +135,7 @@ public class ProjectDescriptionImplDAOTest {
     public void closeDescription() {
         connection.connect();
 
-        ProjectDescription closeDescription = testProjectDescription;
-
-        create(closeDescription);
+        create(testProjectDescription);
 
         ArrayList<ProjectDescription> resultDescriptions = getProjectDescription();
 
@@ -189,7 +179,7 @@ public class ProjectDescriptionImplDAOTest {
 
     //Utility
     private ArrayList<ProjectDescription> getProjectDescription() {
-        String request = "SELECT * FROM projectdescription WHERE project=?;";
+        String request = "SELECT * FROM projectdescription WHERE projectId=?;";
         VereinfachtesResultSet rs = connection.issueSelectStatement(request, testProjekt);
 
         ArrayList<ProjectDescription> resultDescriptions = new ArrayList<>();
@@ -200,7 +190,7 @@ public class ProjectDescriptionImplDAOTest {
     }
 
     private void create(ProjectDescription projectDescription) {
-        String request = "INSERT INTO projectdescription(`id`, `author`, `project`, `text`, `open`) VALUES (?,?,?,?,?);";
+        String request = "INSERT INTO projectdescription(`id`, `studentId`, `projectId`, `text`, `open`) VALUES (?,?,?,?,?);";
         connection.issueInsertOrDeleteStatement(request, projectDescription.getId(), projectDescription.getStudent().getStudentId(), projectDescription.getStudent().getProjectId(), projectDescription.getDescriptionMD(), projectDescription.isOpen());
     }
 
@@ -214,8 +204,8 @@ public class ProjectDescriptionImplDAOTest {
     private ProjectDescription getDescriptionFromResultSet(VereinfachtesResultSet rs) {
         String id = rs.getString("id");
         long timestamp = rs.getTimestamp(2).getTime();
-        String author = rs.getString("author");
-        String project = rs.getString("project");
+        String author = rs.getString("studentId");
+        String project = rs.getString("projectId");
         String text = rs.getString("text");
         boolean open = rs.getBoolean("open");