Download How to Setup Ingres to Work with Your Application Cristian Ianculovici

How to Setup Ingres to
Work with Your Application
Cristian Ianculovici
Bells and
Whistles
Enterprise
Developer
Small
Business
Hobby
Feature Breadth and Depth
Why Ingres Database?
INGRES in
DATAllegro
ORCL 10g
IBM DB2
Teradata
INGRES
Sybase
Progress
SQL Server
Expensive
Total Cost of Ownership
Closed Source
© 2008 Ingres Corporation
Express
Versions
of closed
source
Entry Level Closed
Slide 2
Postgres
MySQL
Inexpensive
Open Source
Applications and Database Connectivity
Ingres Database
© 2008 Ingres Corporation
Slide 3
Applications and Database Connectivity
Ingres Tools and
Applications
Ingres Database
© 2008 Ingres Corporation
Slide 3
Applications and Database Connectivity
There are various ways of classifying applications as
far as the Ingres backend is concerned
 Native
Tools that are Ingres specific
– Terminal Monitor, ABF, Embedded SQL, ICE
– Visual SQL
– OpenROAD
 Standard (generic)
Common tools that are used by different database
systems
– ODBC, JDBC, .NET
– PHP, Python, Perl, Hibernate, Torque
© 2008 Ingres Corporation
Slide 4
Applications and Database Connectivity
Other classifications are based on:
 Performance
 Complexity
 New development / Legacy
© 2008 Ingres Corporation
Slide 5
Choosing the right tools
 This presentation is about
how to connect existing
or newly developed
applications to Ingres
© 2008 Ingres Corporation
Slide 6
Agenda









Ingres Remote Connectivity
Using ODBC
JDBC Connectivity
VB.NET
The Python DBI Driver
Ingres Native Tools – Terminal Monitor
Embedded SQL
OpenROAD
Choosing the right tools
© 2008 Ingres Corporation
Slide 7
Ingres Remote Connectivity
 Using V-nodes
© 2008 Ingres Corporation
Slide 8
V-node Connectivity
 Connecting using the SQL utility (Terminal Monitor)
© 2008 Ingres Corporation
Slide 9
Using ODBC
 Create an ODBC Data Source (DSN
© 2008 Ingres Corporation
Slide 10
Using ODBC – Ingres DSN
© 2008 Ingres Corporation
Slide 11
ODBC Connection – Excel Example
© 2008 Ingres Corporation
Slide 12
ODBC Connection – Excel Example
© 2008 Ingres Corporation
Slide 13
ODBC Connection – Code Example
 MS Visual Basic
Dim con As ADODB.Connection
Dim rs As ADODB.Recordset
Dim ConnStr As String
Dim Query As String
Sub Main()
Set con = New ADODB.Connection
Set rs = New ADODB.Recordset
ConnStr = "DSN=testdb"
con.Open ConnStr
© 2008 Ingres Corporation
Slide 14
ODBC Connection – Code Example
 MS Visual Basic (continued)
Query = "SELECT date('now')"
Do While Not rs.EOF
currentDBDateAndTime = rs(1)
rs.MoveNext
Loop
rs.Close
© 2008 Ingres Corporation
Slide 15
JDBC / .NET
Ingres Database
© 2008 Ingres Corporation
Slide 16
JDBC / .NET
JDBC Application
Ingres Tools and
Applications
JDBC Driver
.NET Data Provider
.NET Application
Ingres Database
© 2008 Ingres Corporation
Slide 16
JDBC / .NET
JDBC Application
Ingres Tools and
Applications
JDBC Driver
Data Access Server
.NET Data Provider
.NET Application
Ingres Database
© 2008 Ingres Corporation
Slide 16
JDBC Connectivity
 Code example
Class.forName("com.ingres.jdbc.IngresDriver");
Connection con = DriverManager.getConnection(
"jdbc:ingres://localhost:II7/testdb", "ingres", "*****");
Statement st = con.createStatement();
query = "INSERT INTO mydate VALUES(date('now'))";
st.execute(query);
st.close();
© 2008 Ingres Corporation
Slide 17
Other Standard Tools
 The Ingres .NET Data Provider
© 2008 Ingres Corporation
Slide 18
Other Standard Tools (continued)
 C#:
public sealed class IngresCommand :
System.Data.Common.DbCommand, IDbCommand,
IDisposable, ICloneable
 VB.NET:
NotInheritable Public Class IngresCommand
Inherits System.Data.Common.DbCommand
Implements IDbCommand, IDisposable, ICloneable
© 2008 Ingres Corporation
Slide 19
Other Standard Tools (continued)
 IngresCommand Class Example
IngresCommand cmd = new IngresCommand(
“SELECT id, name FROM employee WHERE id = ?”);
© 2008 Ingres Corporation
Slide 20
Other Standard Tools (continued)
 The Python DBI Driver
import ingresdbi
dc=ingresdbi.connect(vnode="prod",database="testdb")
c=dc.cursor()
c.execute("select date('now')")
for row in c.fetchall():
dt = row[0]
print dt
dc.commit()
c.close()
dc.close()
© 2008 Ingres Corporation
Slide 21
Ingres Native Tools – Terminal Monitor
 Easiest to use
– Just type the query, end it with \g <Enter> and see the
results of the query.
© 2008 Ingres Corporation
Slide 22
Ingres Native Tools – Terminal Monitor
 Used for running scripts
– Example.sql:
INSERT INTO test_table (col1, col2) VALUES (‘abc’, 123);\g
To run:
sql database_name < Example.sql
– copydb generates files that are later executed using
this command.
© 2008 Ingres Corporation
Slide 23
Ingres Native Tools – Embedded SQL
 C is the most common but there are packages for
Pascal, Fortran, Cobol
 It allows you to write SQL inside your program using
your preferred programming language
 Before going through the typical building steps, the
program needs to be precompiled
© 2008 Ingres Corporation
Slide 24
Ingres Native Tools – Embedded SQL
(continued)
#include <stdio.h>
EXEC SQL INCLUDE SQLCA;
EXEC SQL BEGIN DECLARE SECTION;
/* database name */
static char dbname[20];
/* query output */
static char output[100];
/* error message
*/
static char errmsg[100];
EXEC SQL END DECLARE SECTION;
© 2008 Ingres Corporation
Slide 25
Ingres Native Tools – Embedded SQL
(continued)
main()
{
}
strcpy(dbname,"testdb");
printf("Connecting to <%s> ... ", dbname);
EXEC SQL WHENEVER SQLERROR CALL error;
EXEC SQL CONNECT :dbname;
printf("Done. \n");
EXEC SQL SELECT date('now') INTO :output;
printf("Date/Time on the server is: %s\n",output);
© 2008 Ingres Corporation
Slide 26
Ingres Native Tools – Embedded SQL
(continued)
error()
{
EXEC SQL WHENEVER SQLERROR CONTINUE;
EXEC SQL INQUIRE_SQL(:errmsg = ERRORTEXT);
printf("\nAn error has occured: \n%s\n",errmsg);
exit(1);
}
© 2008 Ingres Corporation
Slide 27
Ingres Native Tools – Embedded SQL
(continued)
 Precompile:
esqlc myTest.sc
 Compile/link:
– Windows
cl myTest.c /link ^
%II_SYSTEM%\ingres\lib\libingres.lib
– UNIX (Linux)
cc myTest.c -o myTest \
$II_SYSTEM/ingres/lib/libingres.a -lm -lc –ldl \
-lpthread
© 2008 Ingres Corporation
Slide 28
OpenROAD
 Open Rapid Object Application Development
 Platform independent
 How to connect
There are three modes:
– No connectivity
– Specify a database (named)
– Connect to the current database
© 2008 Ingres Corporation
Slide 29
OpenROAD (continued)
© 2008 Ingres Corporation
Slide 30
OpenROAD (continued)
© 2008 Ingres Corporation
Slide 31
OpenROAD (continued)
 Running the simple OpenROAD application
© 2008 Ingres Corporation
Slide 32
OpenROAD (continued)
© 2008 Ingres Corporation
Slide 33
OpenROAD (continued)
 Other OpenROAD components
– Web deployment - eClient
– OpenROAD Server – nTier Distribution
– mClient - Mobile
© 2008 Ingres Corporation
Slide 34
© 2008 Ingres Corporation
Slide 35
The following need to be considered when choosing
the tools
© 2008 Ingres Corporation
Slide 35
The following need to be considered when choosing
the tools
© 2008 Ingres Corporation
Slide 35
The following need to be considered when choosing
the tools
 Complexity
© 2008 Ingres Corporation
Slide 35
The following need to be considered when choosing
the tools
 Complexity
 Performance
© 2008 Ingres Corporation
Slide 35
The following need to be considered when choosing
the tools
 Complexity
 Performance
 User interaction
© 2008 Ingres Corporation
Slide 35
The following need to be considered when choosing
the tools




Complexity
Performance
User interaction
Legacy applications
© 2008 Ingres Corporation
Slide 35
Resources
Ingres Connectivity Guide
Embedded SQL Companion Guide
ingres.com
community.ingres.com
Confidential — © 2008 Ingres Corporation
Slide 36