diff --git a/packages/data/db.go b/packages/data/db.go
index 1c4528d..0303a4b 100644
--- a/packages/data/db.go
+++ b/packages/data/db.go
@@ -320,3 +320,22 @@ func (db *DB) GetInstructors() (*[]*types.Instructor, error) {
 
 	return &instructors, nil
 }
+
+func (db *DB) WriteParticipant(p *types.Participant) error {
+	result, err := db.Exec(`
+  INSERT INTO participants
+  	(first_name, last_name, company)
+  VALUES
+  	(?, ?, ?)
+  `, p.FirstName, p.LastName, p.Company)
+	if err != nil {
+		return fmt.Errorf("*DB.writeParticipant: db.Exec(): %v\n", err)
+	}
+
+	p.ID, err = result.LastInsertId()
+	if err != nil {
+		return fmt.Errorf("*DB.writeParticipant: result.LastInsertId(): %v\n", err)
+	}
+
+	return nil
+}
diff --git a/packages/types/types.go b/packages/types/types.go
index 6615f09..0f38580 100644
--- a/packages/types/types.go
+++ b/packages/types/types.go
@@ -1,7 +1,7 @@
 package types
 
 type Person struct {
-	ID        int
+	ID        int64
 	FirstName string
 	LastName  string
 }
@@ -14,31 +14,31 @@ type Participant struct {
 }
 
 type Briefing struct {
-	ID           int
+	ID           int64
 	Date         string
 	Time         string
 	Location     string
 	DocumentName string
 	AsOf         string
-	InstructorID int
+	InstructorID int64
 }
 
 type Answer struct {
-	ID   int
+	ID   int64
 	Text string
 }
 
 type Question struct {
-	ID      int
+	ID      int64
 	Text    string
 	Answers []Answer
 	Correct int
 }
 
 type GivenAnswer struct {
-	BriefingID    int
-	ParticipantID int
-	QuestionID    int
+	BriefingID    int64
+	ParticipantID int64
+	QuestionID    int64
 	GivenAnswer   int
 }