Merge branch 'a-takayama' of https://gitea.it-college.co.jp/2026_0910_AI_5G_Java_MUN/last-group-delevelopment-team1

team1/src/main/java/com/example/demo/entity/Book_collectionEntity.java

@@ -31,19 +31,19 @@ public class Book_collectionEntity {
 	private Integer idBook;
 	
 	//ISBN
-	@Column(name = "isbn", nullable = false)
+	@Column(name = "isbn", nullable = false, length = 13)
 	private String isBn;
 	
 	//書籍名
-	@Column(name = "nm_book", nullable = false)
+	@Column(name = "nm_book", nullable = false, length = 50)
     private String nmBook;
 	
 	//書籍名よみ
-	@Column(name = "kn_book", nullable = true)
+	@Column(name = "kn_book", nullable = true, length = 100)
     private String knBook;
 	
 	//出版社
-	@Column(name = "publisher", nullable = true)
+	@Column(name = "publisher", nullable = true, length = 50)
     private String pubLisher;
 	
 	//特記事項