diff --git a/modules/core/db/core.erm b/modules/core/db/core.erm
index 29733dfa..ddce01a7 100644
--- a/modules/core/db/core.erm
+++ b/modules/core/db/core.erm
@@ -11,8 +11,8 @@
 	</page_setting>
 	<category_index>0</category_index>
 	<zoom>1.0</zoom>
-	<x>2606</x>
-	<y>1945</y>
+	<x>1129</x>
+	<y>1486</y>
 	<default_color>
 		<r>128</r>
 		<g>128</g>
@@ -4664,7 +4664,7 @@
 					<foreign_key>false</foreign_key>
 					<not_null>true</not_null>
 					<primary_key>false</primary_key>
-					<unique_key>true</unique_key>
+					<unique_key>false</unique_key>
 					<character_set></character_set>
 					<collation></collation>
 					<sequence>
diff --git a/modules/core/db/db2/core.sql b/modules/core/db/db2/core.sql
index d70e74f8..7a7d77b6 100644
--- a/modules/core/db/db2/core.sql
+++ b/modules/core/db/db2/core.sql
@@ -289,7 +289,7 @@ CREATE TABLE js_sys_employee_post
 CREATE TABLE js_sys_file_entity
 (
 	file_id varchar(64) NOT NULL,
-	file_md5 varchar(64) NOT NULL UNIQUE,
+	file_md5 varchar(64) NOT NULL,
 	file_path varchar(1000) NOT NULL,
 	file_content_type varchar(200) NOT NULL,
 	file_extension varchar(100) NOT NULL,
diff --git a/modules/core/db/mssql/core.sql b/modules/core/db/mssql/core.sql
index 213e0e98..93c2f692 100644
--- a/modules/core/db/mssql/core.sql
+++ b/modules/core/db/mssql/core.sql
@@ -289,7 +289,7 @@ CREATE TABLE [js_sys_employee_post]
 CREATE TABLE [js_sys_file_entity]
 (
 	[file_id] varchar(64) NOT NULL,
-	[file_md5] varchar(64) NOT NULL UNIQUE,
+	[file_md5] varchar(64) NOT NULL,
 	[file_path] nvarchar(1000) NOT NULL,
 	[file_content_type] varchar(200) NOT NULL,
 	[file_extension] varchar(100) NOT NULL,
diff --git a/modules/core/db/mysql/core.sql b/modules/core/db/mysql/core.sql
index 3a70049c..5ca75ed7 100644
--- a/modules/core/db/mysql/core.sql
+++ b/modules/core/db/mysql/core.sql
@@ -295,8 +295,7 @@ CREATE TABLE js_sys_file_entity
 	file_content_type varchar(200) NOT NULL COMMENT '文件内容类型',
 	file_extension varchar(100) NOT NULL COMMENT '文件后缀扩展名',
 	file_size decimal(31) NOT NULL COMMENT '文件大小(单位B)',
-	PRIMARY KEY (file_id),
-	UNIQUE (file_md5)
+	PRIMARY KEY (file_id)
 ) COMMENT = '文件实体表';
 
 
diff --git a/modules/core/db/oracle/core.sql b/modules/core/db/oracle/core.sql
index 0caed7d0..7fd96dc6 100644
--- a/modules/core/db/oracle/core.sql
+++ b/modules/core/db/oracle/core.sql
@@ -289,7 +289,7 @@ CREATE TABLE js_sys_employee_post
 CREATE TABLE js_sys_file_entity
 (
 	file_id varchar2(64) NOT NULL,
-	file_md5 varchar2(64) NOT NULL UNIQUE,
+	file_md5 varchar2(64) NOT NULL,
 	file_path nvarchar2(1000) NOT NULL,
 	file_content_type varchar2(200) NOT NULL,
 	file_extension varchar2(100) NOT NULL,
diff --git a/modules/core/db/postgresql/core.sql b/modules/core/db/postgresql/core.sql
index b0cf5453..95abd1ae 100644
--- a/modules/core/db/postgresql/core.sql
+++ b/modules/core/db/postgresql/core.sql
@@ -289,7 +289,7 @@ CREATE TABLE js_sys_employee_post
 CREATE TABLE js_sys_file_entity
 (
 	file_id varchar(64) NOT NULL,
-	file_md5 varchar(64) NOT NULL UNIQUE,
+	file_md5 varchar(64) NOT NULL,
 	file_path varchar(1000) NOT NULL,
 	file_content_type varchar(200) NOT NULL,
 	file_extension varchar(100) NOT NULL,
diff --git a/modules/core/src/main/resources/db/upgrade/core/mssql/mssql_4.1.4.sql b/modules/core/src/main/resources/db/upgrade/core/mssql/mssql_4.1.4.sql
new file mode 100644
index 00000000..0be2026d
--- /dev/null
+++ b/modules/core/src/main/resources/db/upgrade/core/mssql/mssql_4.1.4.sql
@@ -0,0 +1,3 @@
+
+-- 删除sys_file_entity表的file_md5唯一索引
+-- ALTER TABLE [js_sys_file_entity] DROP CONSTRAINT [UQ__js_sys_f__3BD63C9E32E0915F]
\ No newline at end of file
diff --git a/modules/core/src/main/resources/db/upgrade/core/mysql/mysql_4.1.4.sql b/modules/core/src/main/resources/db/upgrade/core/mysql/mysql_4.1.4.sql
new file mode 100644
index 00000000..c74ad94b
--- /dev/null
+++ b/modules/core/src/main/resources/db/upgrade/core/mysql/mysql_4.1.4.sql
@@ -0,0 +1,5 @@
+
+-- 删除sys_file_entity表的file_md5唯一索引
+ALTER TABLE `js_sys_file_entity` 
+  DROP INDEX `file_md5`,
+  ADD INDEX `file_md5`(`file_md5`);
\ No newline at end of file
diff --git a/modules/core/src/main/resources/db/upgrade/core/oracle/oracle_4.1.4.sql b/modules/core/src/main/resources/db/upgrade/core/oracle/oracle_4.1.4.sql
new file mode 100644
index 00000000..4719276d
--- /dev/null
+++ b/modules/core/src/main/resources/db/upgrade/core/oracle/oracle_4.1.4.sql
@@ -0,0 +1,3 @@
+
+-- 删除sys_file_entity表的file_md5唯一索引
+-- ALTER TABLE "JS_SYS_FILE_ENTITY" DROP CONSTRAINT "SYS_C0019398"
\ No newline at end of file
diff --git a/modules/core/src/main/resources/db/upgrade/core/postgresql/postgresql_4.1.4.sql b/modules/core/src/main/resources/db/upgrade/core/postgresql/postgresql_4.1.4.sql
new file mode 100644
index 00000000..86ef63e3
--- /dev/null
+++ b/modules/core/src/main/resources/db/upgrade/core/postgresql/postgresql_4.1.4.sql
@@ -0,0 +1,4 @@
+
+-- 删除sys_file_entity表的file_md5唯一索引
+ALTER TABLE "js_sys_file_entity" 
+  DROP CONSTRAINT "js_sys_file_entity_file_md5_key";
\ No newline at end of file
diff --git a/web/db/mssql/core.sql b/web/db/mssql/core.sql
index 213e0e98..93c2f692 100644
--- a/web/db/mssql/core.sql
+++ b/web/db/mssql/core.sql
@@ -289,7 +289,7 @@ CREATE TABLE [js_sys_employee_post]
 CREATE TABLE [js_sys_file_entity]
 (
 	[file_id] varchar(64) NOT NULL,
-	[file_md5] varchar(64) NOT NULL UNIQUE,
+	[file_md5] varchar(64) NOT NULL,
 	[file_path] nvarchar(1000) NOT NULL,
 	[file_content_type] varchar(200) NOT NULL,
 	[file_extension] varchar(100) NOT NULL,
diff --git a/web/db/mysql/core.sql b/web/db/mysql/core.sql
index 3a70049c..5ca75ed7 100644
--- a/web/db/mysql/core.sql
+++ b/web/db/mysql/core.sql
@@ -295,8 +295,7 @@ CREATE TABLE js_sys_file_entity
 	file_content_type varchar(200) NOT NULL COMMENT '文件内容类型',
 	file_extension varchar(100) NOT NULL COMMENT '文件后缀扩展名',
 	file_size decimal(31) NOT NULL COMMENT '文件大小(单位B)',
-	PRIMARY KEY (file_id),
-	UNIQUE (file_md5)
+	PRIMARY KEY (file_id)
 ) COMMENT = '文件实体表';
 
 
diff --git a/web/db/oracle/core.sql b/web/db/oracle/core.sql
index 0caed7d0..7fd96dc6 100644
--- a/web/db/oracle/core.sql
+++ b/web/db/oracle/core.sql
@@ -289,7 +289,7 @@ CREATE TABLE js_sys_employee_post
 CREATE TABLE js_sys_file_entity
 (
 	file_id varchar2(64) NOT NULL,
-	file_md5 varchar2(64) NOT NULL UNIQUE,
+	file_md5 varchar2(64) NOT NULL,
 	file_path nvarchar2(1000) NOT NULL,
 	file_content_type varchar2(200) NOT NULL,
 	file_extension varchar2(100) NOT NULL,
diff --git a/web/db/postgresql/core.sql b/web/db/postgresql/core.sql
index b0cf5453..95abd1ae 100644
--- a/web/db/postgresql/core.sql
+++ b/web/db/postgresql/core.sql
@@ -289,7 +289,7 @@ CREATE TABLE js_sys_employee_post
 CREATE TABLE js_sys_file_entity
 (
 	file_id varchar(64) NOT NULL,
-	file_md5 varchar(64) NOT NULL UNIQUE,
+	file_md5 varchar(64) NOT NULL,
 	file_path varchar(1000) NOT NULL,
 	file_content_type varchar(200) NOT NULL,
 	file_extension varchar(100) NOT NULL,