diff --git a/10_stored_routines_as_functions/script.sql b/10_stored_routines_as_functions/script.sql
index e3ee0ca..336ed33 100644
--- a/10_stored_routines_as_functions/script.sql
+++ b/10_stored_routines_as_functions/script.sql
@@ -1 +1,22 @@
--- Write your SQL code here
\ No newline at end of file
+DELIMITER // 
+  CREATE FUNCTION CalculateBatchProductionDuration(batch_id INT)
+  RETURNS INT DETERMINISTIC BEGIN DECLARE start_date DATE;
+DECLARE end_date DATE; DECLARE duration INT;
+SELECT StartDate, EndDate INTO start_date, end_date FROM ProductionBatch WHERE BatchID = batch_id;
+SET duration = DATEDIFF(end_date, start_date);
+RETURN duration;
+END //
+DELIMITER ;
+
+ALTER TABLE RawMaterial
+ADD COLUMN PricePerUnit DECIMAL(10,2) NOT NULL DEFAULT 0;
+DELIMITER // 
+CREATE FUNCTION GetTotalRawMaterialValue()
+RETURNS DECIMAL(10,2) DETERMINISTIC BEGIN DECLARE total_value DECIMAL(10,2) DEFAULT 0;
+SELECT SUM(QuantityOnHand * PricePerUnit) INTO total_value FROM RawMaterial;
+RETURN total_value;
+END //
+DELIMITER ;
+
+
+-- Write your SQL code here
diff --git a/11_views/script.sql b/11_views/script.sql
index e3ee0ca..0af9665 100644
--- a/11_views/script.sql
+++ b/11_views/script.sql
@@ -1 +1,19 @@
--- Write your SQL code here
\ No newline at end of file
+CREATE VIEW SupplierInventoryStatus
+  AS SELECT s.SupplierID, s.SupplierName, r.MaterialID, r.MaterialName, i.StockLevel, r.ReorderLevel,
+  CASE WHEN i.StockLevel <= r.ReorderLevel
+  THEN 'Reorder Needed' ELSE 'Sufficient Stock'
+  END AS ReorderStatus 
+  FROM Supplier s INNER JOIN RawMaterial r ON s.SupplierID = r.SupplierID 
+  INNER JOIN Inventory i ON r.MaterialID = i.MaterialID;
+
+CREATE TABLE Customers
+  ( CustomerID INT PRIMARY KEY, CustomerName VARCHAR(100),
+  ContactInfo VARCHAR(200) );
+CREATE VIEW FinancialOrderSummary 
+  AS SELECT o.OrderID, 
+  c.CustomerID, c.CustomerName, c.ContactInfo, o.OrderDate, 
+  o.TotalAmount AS OrderValue, o.OrderStatus AS OrderStatus
+  FROM SalesOrder o INNER JOIN Customers c ON o.CustomerID = c.CustomerID;
+
+
+-- Write your SQL code here
diff --git a/12_database_transactions/script.sql b/12_database_transactions/script.sql
index e3ee0ca..a753980 100644
--- a/12_database_transactions/script.sql
+++ b/12_database_transactions/script.sql
@@ -1 +1,19 @@
--- Write your SQL code here
\ No newline at end of file
+START TRANSACTION;
+-- Step 1: Deduct inventory levels for materials in the sales order
+UPDATE Inventory AS i
+INNER JOIN SalesOrderDetails AS sod ON i.MaterialID = sod.MaterialID
+SET i.StockLevel = i.StockLevel - sod.Quantity
+WHERE sod.OrderID = 1; -- Replace 1 with the actual OrderID
+-- Step 2: Check if any inventory level is negative
+IF EXISTS (SELECT 1 FROM Inventory WHERE StockLevel < 0) THEN
+   ROLLBACK;
+   SIGNAL SQLSTATE '45000'
+   SET MESSAGE_TEXT = 'Transaction aborted: Insufficient inventory to process the order.';
+END IF;
+-- Step 3: Update the sales order status to "Completed"
+UPDATE SalesOrder
+SET OrderStatus = 'Completed'
+WHERE OrderID = 1; -- Replace 1 with the actual OrderID
+-- Commit the transaction
+COMMIT;
+-- Write your SQL code here
diff --git a/2_base_tables/script.sql b/2_base_tables/script.sql
index e3ee0ca..df52856 100644
--- a/2_base_tables/script.sql
+++ b/2_base_tables/script.sql
@@ -1 +1,41 @@
--- Write your SQL code here
\ No newline at end of file
+CREATE TABLE QualityCheck
+  ( CheckID INT AUTO_INCREMENT PRIMARY KEY, BatchID INT NOT NULL, CheckDate DATE NOT NULL, 
+  Result VARCHAR(50) NOT NULL, DefectDetails TEXT,
+  INDEX (BatchID), FOREIGN KEY (BatchID) REFERENCES ProductionBatch(BatchID)  )
+  ENGINE=InnoDB; 
+CREATE TABLE RawMaterial
+  ( MaterialID INT AUTO_INCREMENT PRIMARY KEY, MaterialName VARCHAR(100) NOT NULL,
+  QuantityOnHand INT NOT NULL, SupplierID INT NOT NULL, 
+  ReorderLevel INT NOT NULL, INDEX (MaterialName),
+  INDEX (SupplierID),FOREIGN KEY (SupplierID) REFERENCES Supplier(SupplierID) )
+  ENGINE=InnoDB;
+CREATE TABLE Supplier
+  ( SupplierID INT AUTO_INCREMENT PRIMARY KEY, SupplierName VARCHAR(100) NOT NULL, 
+  ContactInfo VARCHAR(255), DeliveryPerformance VARCHAR(50), PaymentTerms VARCHAR(100),
+  INDEX (SupplierName) )
+  ENGINE=InnoDB;
+CREATE TABLE Inventory 
+  ( InventoryID INT AUTO_INCREMENT PRIMARY KEY, MaterialID INT NOT NULL,
+  StockLevel INT NOT NULL, LastUpdated DATETIME NOT NULL, 
+  Location VARCHAR(100),INDEX (MaterialID),INDEX (Location), 
+  FOREIGN KEY (MaterialID) REFERENCES RawMaterial(MaterialID) ) 
+  ENGINE=InnoDB;
+CREATE TABLE Employee 
+  ( EmployeeID INT AUTO_INCREMENT PRIMARY KEY, Name VARCHAR(100) NOT NULL,
+  Role VARCHAR(50) NOT NULL, Department VARCHAR(50) NOT NULL,
+  INDEX (Name),INDEX (Department))
+  ENGINE=InnoDB;
+CREATE TABLE TrainingRecord 
+  ( TrainingRecordID INT AUTO_INCREMENT PRIMARY KEY,
+  EmployeeID INT NOT NULL, TrainingDetails TEXT NOT NULL,INDEX (EmployeeID),
+  FOREIGN KEY (EmployeeID) REFERENCES Employee(EmployeeID) ) 
+  ENGINE=InnoDB;
+
+
+
+
+
+
+
+
+-- Write your SQL code here
diff --git a/3_normal_triggers/script.sql b/3_normal_triggers/script.sql
index e3ee0ca..357ceb8 100644
--- a/3_normal_triggers/script.sql
+++ b/3_normal_triggers/script.sql
@@ -1 +1,47 @@
--- Write your SQL code here
\ No newline at end of file
+CREATE TABLE `Inventory_History` (
+  `HistoryID` int NOT NULL AUTO_INCREMENT,
+  `InventoryID` int NOT NULL,
+  `MaterialID` int NOT NULL,
+  `Previous_StockLevel` int NOT NULL,
+  `Previous_LastUpdated` datetime NOT NULL,
+  `Previous_Location` varchar(100) DEFAULT NULL,
+  `New_StockLevel` int NOT NULL,
+  `New_LastUpdated` datetime NOT NULL,
+  `New_Location` varchar(100) DEFAULT NULL,
+  `ChangeTimestamp` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  PRIMARY KEY (`HistoryID`)
+) ENGINE=InnoDB
+CREATE TRIGGER TRG_AFTER_UPDATE_ON_Inventory
+AFTER UPDATE ON Inventory
+FOR EACH ROW
+INSERT INTO Inventory_History (
+  InventoryID,
+  MaterialID,
+  StockLevel,
+  LastUpdated,
+  Location,
+  Previous_StockLevel,
+  Previous_LastUpdated,
+  Previous_Location
+)
+VALUES (
+  OLD.InventoryID,
+  OLD.MaterialID,
+  OLD.StockLevel,
+  OLD.LastUpdated,
+  OLD.Location,
+  NEW.StockLevel,
+  NEW.LastUpdated,
+  NEW.Location
+);
+DELIMITER //
+CREATE TRIGGER TRG_BEFORE_INSERT_ProductionBatch
+BEFORE INSERT ON ProductionBatch
+FOR EACH ROW
+BEGIN
+ IF NEW.EndDate < NEW.StartDate THEN
+   SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'End Date must be greater than or equal to Start Date';
+ END IF;
+END//
+DELIMITER ;
+-- Write your SQL code here
diff --git a/4_check_constraints/script.sql b/4_check_constraints/script.sql
index e3ee0ca..2bb2290 100644
--- a/4_check_constraints/script.sql
+++ b/4_check_constraints/script.sql
@@ -1 +1,17 @@
--- Write your SQL code here
\ No newline at end of file
+CREATE TABLE `ProductionBatch` (
+  `BatchID` int NOT NULL AUTO_INCREMENT,
+  `StartDate` date NOT NULL,
+  `EndDate` date NOT NULL,
+  `Volume` decimal(10,2) NOT NULL,
+  `Status` varchar(50) NOT NULL,
+  PRIMARY KEY (`BatchID`),
+  CONSTRAINT `productionbatch_chk_1` CHECK ((`EndDate` >= `StartDate`))
+INDEX (StartDate),  INDEX (Status)) ENGINE=InnoDB
+CREATE TABLE SalesOrder
+  ( OrderID INT AUTO_INCREMENT PRIMARY KEY, CustomerID INT NOT NULL, OrderDate DATE NOT NULL,
+  TotalAmount DECIMAL(10,2) NOT NULL,CHECK (TotalAmount > 0),
+  OrderStatus VARCHAR(20) NOT NULL, INDEX (CustomerID)
+  ) ENGINE=InnoDB;
+
+
+-- Write your SQL code here
diff --git a/5_temporal_triggers/script.sql b/5_temporal_triggers/script.sql
index e3ee0ca..d3745c4 100644
--- a/5_temporal_triggers/script.sql
+++ b/5_temporal_triggers/script.sql
@@ -1 +1,29 @@
--- Write your SQL code here
\ No newline at end of file
+CREATE TABLE employee_archive
+  ( ArchiveID INT AUTO_INCREMENT PRIMARY KEY, EmployeeID INT NOT NULL, Name VARCHAR(100),
+  Role VARCHAR(50), Department VARCHAR(50),
+  ArchiveDate DATETIME NOT NULL ) ENGINE=InnoDB;
+CREATE TRIGGER TRG_BEFORE_DELETE_ON_employees
+  BEFORE DELETE ON Employee FOR EACH ROW INSERT INTO 
+  employee_archive SET EmployeeID = OLD.EmployeeID, Name = OLD.Name,
+  Role = OLD.Role, Department = OLD.Department,
+  ArchiveDate = CURRENT_TIMESTAMP;
+CREATE TABLE `OrderHistory` ( `HistoryID` int NOT NULL AUTO_INCREMENT,
+  `OrderID` int NOT NULL,
+  `PackagingCompletionTime` datetime NOT NULL, 
+  PRIMARY KEY (`HistoryID`),
+  FOREIGN KEY (`OrderID`)
+  REFERENCES `SalesOrder`(`OrderID`) ) ENGINE=InnoDB;
+DELIMITER //
+  CREATE TRIGGER TRG_AFTER_UPDATE_SalesOrder
+  AFTER UPDATE ON SalesOrder 
+  FOR EACH ROW BEGIN 
+  IF NEW.OrderStatus = 'Packaged' AND OLD.OrderStatus != 'Packaged' 
+  THEN INSERT INTO OrderHistory (OrderID, PackagingCompletionTime) 
+  VALUES (NEW.OrderID, NOW()); 
+END IF;
+END // 
+DELIMITER ;
+
+
+
+-- Write your SQL code here
diff --git a/9_stored_routines_as_procedures/script.sql b/9_stored_routines_as_procedures/script.sql
index e3ee0ca..6a4f229 100644
--- a/9_stored_routines_as_procedures/script.sql
+++ b/9_stored_routines_as_procedures/script.sql
@@ -1 +1,51 @@
--- Write your SQL code here
\ No newline at end of file
+DELIMITER $$
+
+CREATE PROCEDURE `GetSalesOrderSummary`(IN StartDate DATE, IN EndDate DATE, OUT TotalAmount DOUBLE)
+BEGIN
+    DECLARE totalSales DOUBLE DEFAULT 0.00;
+    DECLARE currentStatus VARCHAR(50);
+    DECLARE done INT DEFAULT 0;
+    
+    -- Declare a cursor to iterate through statuses and calculate total sales
+    DECLARE salesCursor CURSOR FOR 
+        SELECT 
+            Status, SUM(Amount) AS TotalAmount
+        FROM 
+            SalesOrder
+        WHERE 
+            OrderDate BETWEEN StartDate AND EndDate
+        GROUP BY 
+            Status;
+    
+    -- Declare a handler for the cursor completion
+    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;
+
+    -- Initialize total sales
+    SET TotalAmount = 0.00;
+
+    -- Open the cursor
+    OPEN salesCursor;
+
+    read_loop: LOOP
+        FETCH salesCursor INTO currentStatus, totalSales;
+        IF done THEN
+            LEAVE read_loop;
+        END IF;
+        -- Add each status's total sales to the output
+        SET TotalAmount = TotalAmount + totalSales;
+    END LOOP;
+
+    -- Close the cursor
+    CLOSE salesCursor;
+END $$
+
+DELIMITER ;
+
+DELIMITER $$
+  CREATE PROCEDURE `GetProductionReport`( IN StartDate DATE, IN EndDate DATE ) 
+  BEGIN SELECT BatchID, StartDate, EndDate, Volume,
+  Status FROM ProductionBatch WHERE StartDate
+  BETWEEN StartDate AND EndDate OR EndDate BETWEEN StartDate AND EndDate;
+END $$ 
+DELIMITER ;
+
diff --git a/README.md b/README.md
index 8728c63..74c141e 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,4 @@
+[![Review Assignment Due Date](https://classroom.github.com/assets/deadline-readme-button-22041afd0340ce965d47ae6ef1cefeee28c7c493a6346c4f15d667ab976d596c.svg)](https://classroom.github.com/a/fbNyN1as)
 # BBT3104: Advanced Database Sytems Semester Project
 
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