diff --git a/src/main/java/com/example/demo/app/infra/entity/CategoryEntity.java b/src/main/java/com/example/demo/app/infra/entity/CategoryEntity.java
index 17d3ca7..c7568a9 100644
--- a/src/main/java/com/example/demo/app/infra/entity/CategoryEntity.java
+++ b/src/main/java/com/example/demo/app/infra/entity/CategoryEntity.java
@@ -29,7 +29,7 @@ public class CategoryEntity {
 	@Column(name = "category_id")
 	private Long categoryId;
 
-	@Column(name = "category_name", nullable = false)
+	@Column(name = "category_name", nullable = false, length = 50)
 	private String categoryName;
 
 	@Column(name = "transaction_type", nullable = false)
diff --git a/src/main/java/com/example/demo/app/infra/entity/CourseEntity.java b/src/main/java/com/example/demo/app/infra/entity/CourseEntity.java
index 56cb01e..e93b26b 100644
--- a/src/main/java/com/example/demo/app/infra/entity/CourseEntity.java
+++ b/src/main/java/com/example/demo/app/infra/entity/CourseEntity.java
@@ -27,7 +27,7 @@ public class CourseEntity {
 	 @Column(name = "course_id")
 	 private Long courseId;
 	 
-	 @Column(name = "course_name", nullable = false)
+	 @Column(name = "course_name", nullable = false, length = 50)
 	 private String courseName;
 	
 	 
diff --git a/src/main/java/com/example/demo/app/infra/entity/FixedCostEntity.java b/src/main/java/com/example/demo/app/infra/entity/FixedCostEntity.java
index ef131b2..99dadd6 100644
--- a/src/main/java/com/example/demo/app/infra/entity/FixedCostEntity.java
+++ b/src/main/java/com/example/demo/app/infra/entity/FixedCostEntity.java
@@ -34,7 +34,7 @@ public class FixedCostEntity {
 	@JoinColumn(name = "category_id")
 	private CategoryEntity categoryEntity;
 	
-	@Column(name = "fixed_cost_name", nullable = false)
+	@Column(name = "fixed_cost_name", nullable = false, length = 50)
 	private String fixedCostName;
 
 	@Column(name = "amount", nullable = false)
diff --git a/src/main/java/com/example/demo/app/infra/entity/UserEntity.java b/src/main/java/com/example/demo/app/infra/entity/UserEntity.java
index f6d52fd..3d86259 100644
--- a/src/main/java/com/example/demo/app/infra/entity/UserEntity.java
+++ b/src/main/java/com/example/demo/app/infra/entity/UserEntity.java
@@ -30,7 +30,7 @@ public class UserEntity {
 	@Column(name = "user_id")
 	private Long userId;
 
-	@Column(name = "user_name", nullable = false)
+	@Column(name = "user_name", nullable = false, length = 100)
 	private String userName;
 
 	@Column(name = "mail_address", nullable = false)
@@ -39,7 +39,7 @@ public class UserEntity {
 	@Column(name = "password", nullable = false)
 	private String password;
 
-	@Column(name = "secret_answer", nullable = false)
+	@Column(name = "secret_answer", nullable = false, length = 100)
 	private String secretQuestionAnswer;
 	
 	@Column(name = "birth_date", nullable = false)