diff --git a/sql/udctables.sql b/sql/udctables.sql
index b41d90a..2401906 100644
--- a/sql/udctables.sql
+++ b/sql/udctables.sql
@@ -211,6 +211,23 @@ CREATE TABLE IF NOT EXISTS udcviolations (
     INDEX idx_eventtime (eventtime)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
 
+-- CLM file tracking table - tracks imported JSON files (for incremental imports)
+CREATE TABLE IF NOT EXISTS udcclmfiles (
+    fileid INT AUTO_INCREMENT PRIMARY KEY,
+    filename VARCHAR(180) NOT NULL,
+    machinenumber VARCHAR(10),
+    filehash VARCHAR(32),
+    filemodtime DATETIME,
+    partrunid INT,
+    sessionid INT,
+    recordcount INT DEFAULT 0,
+    importdate DATETIME DEFAULT CURRENT_TIMESTAMP,
+    UNIQUE INDEX uk_filename (filename),
+    UNIQUE INDEX uk_filehash (filehash),
+    INDEX idx_machine (machinenumber),
+    INDEX idx_importdate (importdate)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
 -- ============================================================================
 -- Useful Views for Reporting
 -- ============================================================================