CS317 File and Database Systems

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1 CS317 File and Database Systems Using MySQL Workbench [PRClab] August 25, 2015 Sam Siewert

2 Resources for MySQL-Workbench Examine Use of MySQL Workbench to Go Between EER and Schemas Forward Engineer From EER Entered into mysql-workbench to PRClab DBMS Creates Tables, Keys, Views, etc. from Design Reverse Engineer From DBMS to EER in myql-workbench Useful to Understand and Improve existing DBMS Workbench Tutorial - Sam Siewert 2

Methods to Connect to MySQL MySQL-Workbench must CONNECT to MySQL Server to use FORWARD/REVERSE Engineering Option 1 Run mysql-workbench on PRClab with Display set back to your PC and use LOCAL

3 Methods to Connect to MySQL MySQL-Workbench must CONNECT to MySQL Server to use FORWARD/REVERSE Engineering Option 1 Run mysql-workbench on PRClab with Display set back to your PC and use LOCAL connection PRClab-Account-Verification-for-CS317.pdf Must run Xming and must set X11 Display Launch mysql-workbench on PRClab (/usr/bin/mysql-workbench) Option 2 Run mysql-workbench on your PC with SSH Tunnel to PRClab MySQL Server Sam Siewert 3

4 Option-1 Setup Run mysql-workbench on PRClab with Display set back to your PC Enter Localhost connection for your MySQL account Sam Siewert 4

5 Option-1 Example Start mysql-workbench On PRClab Displayed back to PC MySQL PRClab Password Sam Siewert 5

6 Option-2 Setup Generate SSH Keys on PRClab for your account In directory.ssh Copy and paste id_rsa contents into file on your PC Truncated for security purposes Start up mysql-workbench on your PC and set up SSH Tunnel using id_rsa private key on your PC Sam Siewert 6

7 SSH Tunnel Configuration SSH Tunnel PRClab Account PRClab id_rsa PRClab MySQL username Sam Siewert 7

8 Enter PRClab Password Option-2 Example Enter MySQL PRClab Server Password Now workbench is connected to PRClab MySQL Server over Tunnel Sam Siewert 8

9 Example Forward and Reverse Engineering USING MYSQL-WORBENCH Sam Siewert 9

10 A few Tips for FORWARD Use both FORWARD and REVERSE Engineer For FORWARD, make MWB Design file Name Same as your DBMS Target E.g. siewertsdhv1 Make sure you have been Granted Privileges for this DBMS to DROP, and for all DDL Commands Rename if needed as shown Right Click Here Change all Names and Save as Filename that MATCHES Sam Siewert 10

11 Going from Paper Design to Schemas Relational Models, ER, and EER on Paper are Helpful, but How Do We Transition to a Schema we Can Test? Workbench can be Downloaded and Installed on Windows, Max OS-X, Linux - ownloads/workbench Enter Design as an EER using Graphical Workbench Generate SQL DDL Schema When Ready Sam Siewert 11

12 Reverse Engineer Existing Schema to EER DreamHome v Tables, Related by Foreign Keys Not Taking Advantage of EER, but Can Update Model and Export, Re- Import Data to Improve Sam Siewert 12

13 Sakila EER Model Tables, Views, SQL/PSM Routines, Triggers in EER Sam Siewert 13

14 Sakila Example Tables, Views, PSM Routines, Triggers Models Relations Between Entities [Tables] and Includes Operations [Routines] More Sophisticated Design and Schema that Matches Sam Siewert 14

15 Reverse Engineer Differences The Forward/Reverse Engineering is Not Perfect, but Not Bad SQL Generation from Pictures, Picture Generation from SQL Much like at GUI Code Generator Issue is Sync Between Design and SQL Sam Siewert 15

16 Recall DreamHome v. 2.0 ER Design Entities, Attributes, Keys, 1:1, 1:*, *:1 Relations P. 359 Features PK and FK Attributes Sam Siewert 16

17 Improvements to DreamHome v. 1.0 Connections 1:n Made Via PKs Note InnoDB Physical Engine Required for FKs Improve Model and Schema FKs Require InnoDB, MyISAM default [Many options MEMORY, FEDERATED, ScaleDB ] Sam Siewert 17

18 DreamHome v. 1.0 EER See if We Can Improve PK, FK and Normalization Sam Siewert 18

19 Check Schema and Add Test Data Review Schema Sam Siewert 19

20 DreamHome v. 2.0 Global EER Sam Siewert 20

21 Equivalent Using DH v. 1.0 Adapted Sam Siewert 21

CS317 File and Database Systems

CS317 File and Database Systems Lecture 9 Conceptual, Logical, and Physical DBMS Design http://dev.mysql.com/downloads/workbench October 22, 2017 Sam Siewert Reminders Assignment #4 Due Friday Assignment