August 25, 2015 Sam Siewert

CS317 File and Database Systems

Using MySQL Workbench [PRClab]

http://dev.mysql.com/downloads/workbench

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 - https://www.youtube.com/watch?v=X_umYKqKaF0

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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 – http://mercury.pr.erau.edu/~siewerts/cs317/documents/Basic-

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

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

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Option-1 Example

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Start mysql-workbench On PRClab Displayed back to PC

MySQL PRClab Password

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

– Start up mysql-workbench on your PC and set up SSH Tunnel using id_rsa private key on your PC

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Truncated for security purposes

SSH Tunnel Configuration

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SSH Tunnel

PRClab Account

PRClab id_rsa

PRClab MySQL username

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

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USING MYSQL-WORBENCH Example Forward and Reverse Engineering

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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

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Right Click Here – Change all Names and Save as Filename that MATCHES

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 - http://dev.mysql.com/downloads/workbench Enter Design as an EER using Graphical Workbench

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Generate SQL DDL Schema When Ready…

Reverse Engineer Existing Schema to EER DreamHome v. 1.0 – 6 Tables, Related by Foreign Keys Not Taking Advantage of EER, but Can Update Model and Export, Re-Import Data to Improve

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Sakila EER Model

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Tables, Views, SQL/PSM Routines, Triggers in EER

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

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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

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

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Improvements to DreamHome v. 1.0 Connections 1:n Made Via PKs Note InnoDB Physical Engine Required for FKs Improve Model and Schema

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FKs Require InnoDB, MyISAM default [Many options – MEMORY, FEDERATED, ScaleDB…]

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

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Check Schema and Add Test Data Review Schema

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DreamHome v. 2.0 Global EER

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Equivalent Using DH v. 1.0 Adapted

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