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The database represents an organized system to store and manage information in an efficient manner. The data management system consists of different data records which include product catalogs and sales transactions together with customer profiles. A database manager allows users to control data access, generate reports, and analyze usage. These systems are commonly used in large processors but can also be found in smaller distributed workstations and mid-range systems.
Types of Databases:
Database Management Systems (DBMS):
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| Database TOPICS | |
|---|---|
| Data models Entity-relationship | Query optimization algorithms |
| SQL and QBE | Oracle Database |
| Database Designing | Big Data Hadoop |
| Data Mining | Query processing |
| Relational Database | Network database model |
| Flat Model | E-R diagram |
| Client-Server architecture | Relational Operations |
| Crash recovery | Normalisation |
| SQL and Application code | Normal forms including 1NF, 2NF and 3NF |
| Transaction Processing Recovery and concurrency control | Object-oriented and object-relational databases, |
| Logical databases | Web databases |
| Distributed databases | Data warehousing |
Problem - Using the Colonial database, create the following Stored Procedure - CreateDynamicTripAd
Part 1
Part 2 - Reviews are stored in a table called Trip reviews. The table contains the columns
The procedure will also update a new table named TripAds which keeps track of the ad count generated for this trip, the trip Id and the last time it was updated.
Solution
Australia
USA
UK
UAE
MALAYSIA
NEW ZEALAND
CANADA
Part 1 - Instructions
CREATE PROCEDURE DynamicTripAd(IN TripIID Decimal(3,0))
BEGIN
SELECT *
FROM Trip INNER JOIN Reservation ON Reservation.ReservationID=Trip.ReservationID
WHERE Trip.TripId = TripIID,
Select Avg(Reservation.TripPrice) from Trip,
Select count(Reservation.ReservationID) from Trip,
Select Max(Trip. MaxGrpSize) from Trip;
END //
DELIMITER ;
CALL DynamicTripAd(11);
Part 2 - Instructions
CREATE TABLE TripReviews
(
TripID DECIMAL(3,0),
rating number,
reviewnote char(20),
dateofreview date);
CREATE TABLE Trip
(TripID DECIMAL(3,0) PRIMARY KEY,
adcount CHAR(75),
dateofgeneration date);
CREATE TRIGGER NextTRIP
BEFORE/AFTER INSERT, UPDATE, DELETE
ON TripReview
FOR EACH ROW
BEGIN
IF INSERTING
INSERT INTO TripAds
VALUES (:new.Tripid, :new.adCount, :new.dateofgeneration)
IF UPDATING
UPDATE TripAds
SET Tripid = :new.Tripid, adCount = :new.adCount,
dateofgeneration = :new. dateofgeneration
WHERE Tripid = :old. Tripid;
DELETE FROM TripAds WHERE key_column = :old.key_column ;
INSERT INTO TripAds VALUES (same as when INSERTING)
IF DELETING
DELETE FROM TripAds WHERE dateofgeneration = :old. dateofgeneration;
END;
Code
-- phpMyAdmin SQL Dump
-- version 4.7.0
-- https://www.phpmyadmin.net/
--
-- Host: 127.0.0.1
-- Generation Time: Mar 08, 2019 at 02:57 AM
-- Server version: 10.1.25-MariaDB
-- PHP Version: 5.6.31
SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
SET AUTOCOMMIT = 0;
START TRANSACTION;
SET time_zone = "+00:00";
/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8mb4 */;
--
-- Database: `procedure`
--
-- --------------------------------------------------------
--
-- Table structure for table `reservation`
--
CREATE TABLE `reservation` (
`ReservationID` char(7) NOT NULL,
`TripID` decimal(3,0) DEFAULT NULL,
`TripDate` date DEFAULT NULL,
`NumPersons` decimal(3,0) DEFAULT NULL,
`TripPrice` decimal(6,2) DEFAULT NULL,
`OtherFees` decimal(6,2) DEFAULT NULL,
`CustomerNum` char(4) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
--
-- Dumping data for table `reservation`
--
INSERT INTO `reservation` (`ReservationID`, `TripID`, `TripDate`, `NumPersons`, `TripPrice`, `OtherFees`, `CustomerNum`) VALUES
('1600001', '40', '0000-00-00', '2', '55.00', '0.00', '101'),
('1600002', '21', '0000-00-00', '2', '95.00', '0.00', '101'),
('1600003', '28', '0000-00-00', '1', '35.00', '0.00', '103'),
('1600004', '26', '0000-00-00', '4', '45.00', '15.00', '104'),
('1600005', '39', '0000-00-00', '5', '55.00', '0.00', '105'),
('1600006', '32', '0000-00-00', '1', '80.00', '20.00', '106'),
('1600007', '22', '0000-00-00', '8', '75.00', '10.00', '107'),
('1600008', '28', '0000-00-00', '2', '35.00', '0.00', '108'),
('1600009', '38', '0000-00-00', '2', '90.00', '40.00', '109'),
('1600010', '2', '0000-00-00', '3', '25.00', '0.00', '102'),
('1600011', '3', '0000-00-00', '3', '25.00', '0.00', '102'),
('1600012', '1', '0000-00-00', '4', '15.00', '0.00', '115'),
('1600013', '8', '0000-00-00', '1', '20.00', '5.00', '116'),
('1600014', '12', '0000-00-00', '2', '40.00', '5.00', '119'),
('1600015', '10', '0000-00-00', '1', '20.00', '0.00', '120'),
('1600016', '11', '0000-00-00', '6', '75.00', '15.00', '121'),
('1600017', '39', '0000-00-00', '3', '20.00', '5.00', '122'),
('1600018', '38', '0000-00-00', '4', '85.00', '15.00', '126'),
('1600019', '25', '0000-00-00', '2', '110.00', '25.00', '124'),
('1600020', '28', '0000-00-00', '2', '35.00', '10.00', '124'),
('1600021', '32', '0000-00-00', '3', '90.00', '20.00', '112'),
('1600022', '21', '0000-00-00', '1', '95.00', '25.00', '119'),
('1600024', '38', '0000-00-00', '1', '70.00', '30.00', '121'),
('1600025', '38', '0000-00-00', '2', '70.00', '45.00', '125'),
('1600026', '12', '0000-00-00', '2', '40.00', '0.00', '126'),
('1600029', '4', '0000-00-00', '4', '105.00', '25.00', '120'),
('1600030', '15', '0000-00-00', '6', '60.00', '15.00', '104');
-- --------------------------------------------------------
--
-- Table structure for table `trip`
--
CREATE TABLE `trip` (
`TripID` decimal(3,0) NOT NULL,
`TripName` char(75) DEFAULT NULL,
`StartLocation` char(50) DEFAULT NULL,
`State` char(2) DEFAULT NULL,
`Distance` decimal(4,0) DEFAULT NULL,
`MaxGrpSize` decimal(4,0) DEFAULT NULL,
`Type` char(20) DEFAULT NULL,
`Season` char(20) DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
--
-- Dumping data for table `trip`
--
INSERT INTO `trip` (`TripID`, `TripName`, `StartLocation`, `State`, `Distance`, `MaxGrpSize`, `Type`, `Season`) VALUES
('1', 'Arethusa Falls', 'Harts Location', 'NH', '5', '10', 'Hiking', 'Summer'),
('2', 'Mt Ascutney - North Peak', 'Weathersfield', 'VT', '5', '6', 'Hiking', 'Late Spring'),
('3', 'Mt Ascutney - West Peak', 'Weathersfield', 'VT', '6', '10', 'Hiking', 'Early Fall'),
('4', 'Bradbury Mountain Ride', 'Lewiston-Auburn', 'ME', '25', '8', 'Biking', 'Early Fall'),
('5', 'Baldpate Mountain', 'North Newry', 'ME', '6', '10', 'Hiking', 'Late Spring'),
('6', 'Blueberry Mountain', 'Batchelders Grant', 'ME', '8', '8', 'Hiking', 'Early Fall'),
('7', 'Bloomfield - Maidstone', 'Bloomfield', 'CT', '10', '6', 'Paddling', 'Late Spring'),
('8', 'Black Pond', 'Lincoln', 'NH', '8', '12', 'Hiking', 'Summer'),
('9', 'Big Rock Cave', 'Tamworth', 'NH', '6', '10', 'Hiking', 'Summer'),
('10', 'Mt. Cardigan - Firescrew', 'Orange', 'NH', '7', '8', 'Hiking', 'Summer'),
('11', 'Chocorua Lake Tour', 'Tamworth', 'NH', '12', '15', 'Paddling', 'Summer'),
('12', 'Cadillac Mountain Ride', 'Bar Harbor', 'ME', '8', '16', 'Biking', 'Early Fall'),
('13', 'Cadillac Mountain', 'Bar Harbor', 'ME', '7', '8', 'Hiking', 'Late Spring'),
('14', 'Cannon Mtn', 'Franconia', 'NH', '6', '6', 'Hiking', 'Early Fall'),
('15', 'Crawford Path Presidentials Hike', 'Crawford Notch', 'NH', '16', '4', 'Hiking', 'Summer'),
('16', 'Cherry Pond', 'Whitefield', 'NH', '6', '16', 'Hiking', 'Spring'),
('17', 'Huguenot Head Hike', 'Bar Harbor', 'ME', '5', '10', 'Hiking', 'Early Fall'),
('18', 'Low Bald Spot Hike', 'Pinkam Notch', 'NH', '8', '6', 'Hiking', 'Early Fall'),
('19', 'Mason?s Farm', 'North Stratford', 'CT', '12', '7', 'Paddling', 'Late Spring'),
('20', 'Lake Mephremagog Tour', 'Newport', 'VT', '8', '15', 'Paddling', 'Late Spring'),
('21', 'Long Pond', 'Rutland', 'MA', '8', '12', 'Hiking', 'Summer'),
('22', 'Long Pond Tour', 'Greenville', 'ME', '12', '10', 'Paddling', 'Summer'),
('23', 'Lower Pond Tour', 'Poland', 'ME', '8', '15', 'Paddling', 'Late Spring'),
('24', 'Mt Adams', 'Randolph', 'NH', '9', '6', 'Hiking', 'Summer'),
('25', 'Mount Battie Ride', 'Camden', 'ME', '20', '8', 'Biking', 'Early Fall'),
('26', 'Mount Cardigan Hike', 'Cardigan', 'NH', '4', '16', 'Hiking', 'Late Fall'),
('27', 'Mt. Chocorua', 'Albany', 'NH', '6', '10', 'Hiking', 'Spring'),
('28', 'Mount Garfield Hike', 'Woodstock', 'NH', '5', '10', 'Hiking', 'Early Fall'),
('29', 'Metacomet-Monadnock Trail Hike', 'Pelham', 'MA', '10', '12', 'Hiking', 'Late Spring'),
('30', 'McLennan Reservation Hike', 'Tyringham', 'MA', '6', '16', 'Hiking', 'Summer'),
('31', 'Missisquoi River - VT', 'Lowell', 'VT', '12', '10', 'Paddling', 'Summer'),
('32', 'Northern Forest Canoe Trail', 'Stark', 'NH', '15', '10', 'Paddling', 'Summer'),
('33', 'Park Loop Ride', 'Mount Desert Island', 'ME', '27', '8', 'Biking', 'Late Spring'),
('34', 'Pontook Reservoir Tour', 'Dummer', 'NH', '15', '14', 'Paddling', 'Late Spring'),
('35', 'Pisgah State Park Ride', 'Northborough', 'NH', '12', '10', 'Biking', 'Summer'),
('36', 'Pondicherry Trail Ride', 'White Mountains', 'NH', '15', '16', 'Biking', 'Late Spring'),
('37', 'Seal Beach Harbor', 'Bar Harbor', 'ME', '5', '16', 'Hiking', 'Early Spring'),
('38', 'Sawyer River Ride', 'Mount Carrigain', 'NH', '10', '18', 'Biking', 'Early Fall'),
('39', 'Welch and Dickey Mountains Hike', 'Thorton', 'NH', '5', '10', 'Hiking', 'Summer'),
('40', 'Wachusett Mountain', 'Princeton', 'MA', '8', '8', 'Hiking', 'Early Spring'),
('41', 'Westfield River Loop', 'Fort Fairfield', 'ME', '20', '10', 'Biking', 'Late Spring');
--
-- Indexes for dumped tables
--
--
-- Indexes for table `reservation`
--
ALTER TABLE `reservation`
ADD PRIMARY KEY (`ReservationID`),
ADD KEY `cons1` (`TripID`);
--
-- Indexes for table `trip`
--
ALTER TABLE `trip`
ADD PRIMARY KEY (`TripID`);
--
-- Constraints for dumped tables
--
--
-- Constraints for table `reservation`
--
ALTER TABLE `reservation`
ADD CONSTRAINT `cons1` FOREIGN KEY (`TripID`) REFERENCES `trip` (`TripID`);
COMMIT;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
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