diff --git a/src/main/java/de/avatic/lcc/repos/CalculationJobRepository.java b/src/main/java/de/avatic/lcc/repos/CalculationJobRepository.java
new file mode 100644
index 0000000..926bcfb
--- /dev/null
+++ b/src/main/java/de/avatic/lcc/repos/CalculationJobRepository.java
@@ -0,0 +1,10 @@
+package de.avatic.lcc.repos;
+
+import de.avatic.lcc.model.calculations.CalculationJob;
+import org.springframework.data.repository.CrudRepository;
+
+
+public interface CalculationJobRepository extends CrudRepository<CalculationJob, Integer> {
+
+
+}
diff --git a/src/main/java/de/avatic/lcc/repos/CountryPropertyTypeRepository.java b/src/main/java/de/avatic/lcc/repos/CountryPropertyTypeRepository.java
new file mode 100644
index 0000000..cb730ec
--- /dev/null
+++ b/src/main/java/de/avatic/lcc/repos/CountryPropertyTypeRepository.java
@@ -0,0 +1,8 @@
+package de.avatic.lcc.repos;
+
+import de.avatic.lcc.model.properties.CountryPropertyType;
+import org.springframework.data.repository.CrudRepository;
+
+
+public interface CountryPropertyTypeRepository extends CrudRepository<CountryPropertyType, Integer> {
+}
diff --git a/src/main/java/de/avatic/lcc/repos/CountryRepository.java b/src/main/java/de/avatic/lcc/repos/CountryRepository.java
new file mode 100644
index 0000000..8ed23be
--- /dev/null
+++ b/src/main/java/de/avatic/lcc/repos/CountryRepository.java
@@ -0,0 +1,9 @@
+package de.avatic.lcc.repos;
+
+import de.avatic.lcc.model.country.Country;
+import org.springframework.data.repository.CrudRepository;
+
+
+public interface CountryRepository extends CrudRepository<Country, Integer> {
+
+}
diff --git a/src/main/java/de/avatic/lcc/repos/DistanceMatrixRepository.java b/src/main/java/de/avatic/lcc/repos/DistanceMatrixRepository.java
new file mode 100644
index 0000000..c2ae091
--- /dev/null
+++ b/src/main/java/de/avatic/lcc/repos/DistanceMatrixRepository.java
@@ -0,0 +1,10 @@
+package de.avatic.lcc.repos;
+
+import de.avatic.lcc.model.nodes.DistanceMatrix;
+import org.springframework.data.repository.CrudRepository;
+
+
+public interface DistanceMatrixRepository extends CrudRepository<DistanceMatrix, Integer> {
+
+
+}
diff --git a/src/main/java/de/avatic/lcc/repos/MaterialRepository.java b/src/main/java/de/avatic/lcc/repos/MaterialRepository.java
new file mode 100644
index 0000000..950a751
--- /dev/null
+++ b/src/main/java/de/avatic/lcc/repos/MaterialRepository.java
@@ -0,0 +1,10 @@
+package de.avatic.lcc.repos;
+
+import de.avatic.lcc.model.materials.Material;
+import org.springframework.data.repository.CrudRepository;
+
+
+public interface MaterialRepository extends CrudRepository<Material, Integer> {
+
+
+}
diff --git a/src/main/java/de/avatic/lcc/repos/NodeRepository.java b/src/main/java/de/avatic/lcc/repos/NodeRepository.java
new file mode 100644
index 0000000..77fd5a3
--- /dev/null
+++ b/src/main/java/de/avatic/lcc/repos/NodeRepository.java
@@ -0,0 +1,10 @@
+package de.avatic.lcc.repos;
+
+import de.avatic.lcc.model.nodes.Node;
+import org.springframework.data.repository.CrudRepository;
+
+
+public interface NodeRepository extends CrudRepository<Node, Integer> {
+
+
+}
diff --git a/src/main/java/de/avatic/lcc/repos/PackagingPropertyTypeRepository.java b/src/main/java/de/avatic/lcc/repos/PackagingPropertyTypeRepository.java
new file mode 100644
index 0000000..74f02ac
--- /dev/null
+++ b/src/main/java/de/avatic/lcc/repos/PackagingPropertyTypeRepository.java
@@ -0,0 +1,8 @@
+package de.avatic.lcc.repos;
+
+import de.avatic.lcc.model.packaging.PackagingPropertyType;
+import org.springframework.data.repository.CrudRepository;
+
+
+public interface PackagingPropertyTypeRepository extends CrudRepository<PackagingPropertyType, Integer> {
+}
diff --git a/src/main/java/de/avatic/lcc/repos/PackagingRepository.java b/src/main/java/de/avatic/lcc/repos/PackagingRepository.java
new file mode 100644
index 0000000..dcebedc
--- /dev/null
+++ b/src/main/java/de/avatic/lcc/repos/PackagingRepository.java
@@ -0,0 +1,10 @@
+package de.avatic.lcc.repos;
+
+import de.avatic.lcc.model.packaging.Packaging;
+import org.springframework.data.repository.CrudRepository;
+
+
+public interface PackagingRepository extends CrudRepository<Packaging, Integer> {
+
+
+}
diff --git a/src/main/java/de/avatic/lcc/repos/PremissRepository.java b/src/main/java/de/avatic/lcc/repos/PremissRepository.java
new file mode 100644
index 0000000..ba6a471
--- /dev/null
+++ b/src/main/java/de/avatic/lcc/repos/PremissRepository.java
@@ -0,0 +1,11 @@
+package de.avatic.lcc.repos;
+
+import de.avatic.lcc.model.premisses.Premiss;
+import org.springframework.data.repository.CrudRepository;
+
+
+public interface PremissRepository extends CrudRepository<Premiss, Integer> {
+
+
+
+}
diff --git a/src/main/java/de/avatic/lcc/repos/PropertySetRepository.java b/src/main/java/de/avatic/lcc/repos/PropertySetRepository.java
new file mode 100644
index 0000000..35e8c82
--- /dev/null
+++ b/src/main/java/de/avatic/lcc/repos/PropertySetRepository.java
@@ -0,0 +1,8 @@
+package de.avatic.lcc.repos;
+
+import de.avatic.lcc.model.properties.PropertySet;
+import org.springframework.data.repository.CrudRepository;
+
+
+public interface PropertySetRepository extends CrudRepository<PropertySet, Integer> {
+}
diff --git a/src/main/java/de/avatic/lcc/repos/SysGroupRepository.java b/src/main/java/de/avatic/lcc/repos/SysGroupRepository.java
new file mode 100644
index 0000000..f4ef784
--- /dev/null
+++ b/src/main/java/de/avatic/lcc/repos/SysGroupRepository.java
@@ -0,0 +1,9 @@
+package de.avatic.lcc.repos;
+
+import de.avatic.lcc.model.user.SysGroup;
+import org.springframework.data.repository.CrudRepository;
+
+
+public interface SysGroupRepository extends CrudRepository<SysGroup, Integer> {
+
+}
diff --git a/src/main/java/de/avatic/lcc/repos/SysUserNodeRepository.java b/src/main/java/de/avatic/lcc/repos/SysUserNodeRepository.java
new file mode 100644
index 0000000..f5fa2c3
--- /dev/null
+++ b/src/main/java/de/avatic/lcc/repos/SysUserNodeRepository.java
@@ -0,0 +1,9 @@
+package de.avatic.lcc.repos;
+
+import de.avatic.lcc.model.user.SysUserNode;
+import org.springframework.data.repository.CrudRepository;
+
+
+public interface SysUserNodeRepository extends CrudRepository<SysUserNode, Integer> {
+
+}
diff --git a/src/main/java/de/avatic/lcc/repos/SysUserRepository.java b/src/main/java/de/avatic/lcc/repos/SysUserRepository.java
new file mode 100644
index 0000000..7678a0b
--- /dev/null
+++ b/src/main/java/de/avatic/lcc/repos/SysUserRepository.java
@@ -0,0 +1,13 @@
+package de.avatic.lcc.repos;
+
+import de.avatic.lcc.model.user.SysUser;
+import org.springframework.data.repository.CrudRepository;
+
+
+public interface SysUserRepository extends CrudRepository<SysUser, Integer> {
+
+    boolean existsByWorkdayIdIgnoreCase(String workdayId);
+
+    boolean existsByEmailIgnoreCase(String email);
+
+}
diff --git a/src/main/java/de/avatic/lcc/repos/SystemPropertyTypeRepository.java b/src/main/java/de/avatic/lcc/repos/SystemPropertyTypeRepository.java
new file mode 100644
index 0000000..f8ec1ab
--- /dev/null
+++ b/src/main/java/de/avatic/lcc/repos/SystemPropertyTypeRepository.java
@@ -0,0 +1,8 @@
+package de.avatic.lcc.repos;
+
+import de.avatic.lcc.model.properties.SystemPropertyType;
+import org.springframework.data.repository.CrudRepository;
+
+
+public interface SystemPropertyTypeRepository extends CrudRepository<SystemPropertyType, Integer> {
+}
diff --git a/src/main/java/de/avatic/lcc/repos/ValidityPeriodRepository.java b/src/main/java/de/avatic/lcc/repos/ValidityPeriodRepository.java
new file mode 100644
index 0000000..66ff7e6
--- /dev/null
+++ b/src/main/java/de/avatic/lcc/repos/ValidityPeriodRepository.java
@@ -0,0 +1,9 @@
+package de.avatic.lcc.repos;
+
+import de.avatic.lcc.model.rates.ValidityPeriod;
+import org.springframework.data.repository.CrudRepository;
+
+
+public interface ValidityPeriodRepository extends CrudRepository<ValidityPeriod, Integer> {
+
+}