Trends and directions for application developers

© 2015 IBM Corporation
zAnalytics
DB2 Update Day 2015 – March 23-27, 2015
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DB2 Trends and
directions for developers
Jørn Thyssen
Technical Sales and Solutions
Analytics on System z

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• Traditionally:
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CICS/IMS transactions written in Cobol or PL/1 accessing DB2
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Batch programs accessing DB2
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Normally well written and good performing SQL
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Everything on System z
• Today also:
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Dynamic SQL from distributed applications
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Hand-coded or generated SQL (loved by every DBA)
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All kinds of programming languages
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Native stored procedures (next session!)
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Mobile apps – driving a lot of the growth on System z
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DB2 for z/OS Applications

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Agenda
• JDBC, ODBC, .NET API
• Scripting languages
 PhP, Ruby, Python, Perl
 Node.js
• Hibernate/iBatis Accelerators
• DB2 Connect Licensing Updates
• DB2 JSON support
• Tooling
 Rational
 Data Studio
• Cloud/Mobile update
 Cast Iron
 z/OS Connect
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DB2 supports all of the top 10 popular programming languages
SQL PL curently #17 and going up
Cobol not on the list...

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DB2 Drivers – Panoramic View
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PhP Python/Jython Ruby/JRuby
Javascript
node.js
Scala
Zend
framework
adapters
SqlAlchemy/
Django Adapter
DB2
DB2 CLI and ODBC driver DB2 JCC JDBC driver
Rails
Adapter
Liftnode-odbc node.js
JSON
driver
c
Python interpreter
java c
Ruby interpreter
java
Java
JDBC API
pureQuery
API
JSON API
Hibernate
JPA
C
based
Java (Type 4)
Native (Type 2)

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DB2 Connect Simplification
 Server based licensing
– DB2 Connect Unlimited Edition
– One time install to server, no need for license key on client
workstations
 Lightweight client packages utilized throughout the enterprise
http://www-01.ibm.com/support/docview.wss?
uid=swg27016878

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Microsoft ADO.NET
MS OLE DB.NET
IBM Data Server (DB2 z/OS,
DB2 LUW, IDS*, DB2 for i)
* Only DB2 CLI & DB2.NET provider
support IDS
IBM DB2 ODBC/CLI Driver
IBM DB2 OLEDB Driver LINQ
Entity Framework / EDM Visual Studio
Integration/ RAD
tooling
Connection
Command
Data Reader
Data Adapter
IBM DB2.NET Data Provider
Select Command
Insert Command
Update Command
Delete Command
IBM DB2 DS Driver
• Language-Integrated Query (LINQ), is a convenient means to
execute queries against data sources, including XML, CLR objects,
DataSet objects in ADO.NET.
• The Entity Framework automatically generates lightweight .NET
classes that map to relational database structures. The Entity
Framework provides all the database-specific plumbing code that would
otherwise need to be written and maintained
• Visual Studio Integration offers Rapid Appl Development through
data modeling UI tools.
MS ODBC.NET
DB2 Connect APIs - .NET

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DB2 Connect APIs - CLI
• C and C++ application programming interface
• DB2 CLI is based on the Microsoft® Open Database Connectivity (ODBC)
specification, and the International Standard for SQL/CLI.
• Also provides number of DB2-specific APIs which are not a part of the ODBC
standards to improve DB2 access
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CLI Framework

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Scripting Languages
• Node.js
 Server side JavaScript
 Popular uptake in mobile app development
 Fast, scalable, lightweight application solution for data-intensive real-time applications
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Scripting Languages
• Perl
 Legacy scripting language
 Still #12 on the list
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Scripting Languages
• PhP
 Many web pages developed and maintained in PhP
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Scripting Languages
• Python
 Robust programming language with rich set of libraries for most tasks
 Well embraced by the enterprise world.
 Different options like SQLAlchemy and Django available for particular database access needs
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Scripting Languages
• Ruby on Rails
 Popular framework for web app development
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Java common layer, SQLJ runtime
T4 subsystem
builds/parses
DRDA requests/replies
T2z subsystem calls into
native z/OS APIs
T2u subsystem
calls native LUW
APIs
JDBC
Application
SQLJ
Application
CCC
RRS
DB2, IDS
DRDA over
TCP/IP
DRDA Shared memory to
local UDB
DB2 for z/OS
DB2 Connect APIs - JDBC

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© 2013 International Business Machines Corporation
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• Dynamisk SQL in Java with JDBC
http://www-01.ibm.com/support/knowledgecenter/SSEPEK_11.0.0/com.ibm.db2z11.doc.java/src/tpc/imjcc_tjvjcccn.dita

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pureQuery Runtime – every Java application benefits!
• JDBC – acceleration for any JDBC application
 Convert dynamic SQL to static SQL
 Replace problem queries without changing the source
• Hibernate/OpenJPA/iBatis – acceleration for persistence layers
 Improved SQL “batch” performance
 Auto-tuning of Hibernate and OpenJPA peristence options
• SQL-friendly APIs for OO access to relational
 Object to relational mapping
 APIs that can be tailored to return XML, JSON, arrays, etc.

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Client Optimization
Improve Java data access performance for DB2 – without changing a line of code
• Captures SQL for Java applications
 Custom-developed, framework-based, or packaged applications
• Bind the SQL for static execution without changing a line of code
 New bind tooling included
• Delivers static SQL execution value to existing DB2 applications
 Making response time predictable and stable by locking in the SQL access path pre-
execution, rather than re-computing at access time
 Limiting user access to tables by granting execute privileges on the query packages rather
than access privileges on the table
 Aiding forecasting accuracy and capacity planning by capturing additional workload
information based on package statistics
 Drive down CPU cycles to increase overall capability
• Choose between dynamic or static execution at deployment time,
rather than development time

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DB2 Java Data Access Frameworks Acceleration
• Hibernate: http://www.ibm.com/developerworks/data/library/techarticle/dm-
1008hibernateibatispurequery1/index.html?ca=dnw-1133&ca=dth-i
• iBatis: http://www.ibm.com/developerworks/data/library/techarticle/dm-
1009hibernateibatispurequery2/index.html
• Spring: http://www.ibm.com/developerworks/data/tutorials/dm0806hsing/index.html

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• Updated packaging with client management capabilities of Optim Configuration
Manager for z/OS
• New capabilities position this as an ideal edition for enterprise customer to manage
and improve performance of distributed application workload
• Soft bundle of the following products
DB2 Connect Unlimited Advanced Edition for System z
2. InfoSphere Optim pureQuery for LUW
1. DB2 Connect Unlimited Edition for System z
3. InfoSphere Optim Configuration Manager for DB2 for z/OS
New
DB2 Connect Unlimited Advanced Edition

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Tooling

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Rational Developer for System z:
An Integrated development Environment for Sys z
Rational Developer for System
z
A modern IDE for productive development of
cross-platform applications written in COBOL,
PL/I, ASM, Java, EGL or C/C++ in System z
CICS, IMS, DB2, Batch applications
Access to typical System
z sub-system functionality
in z/OS, CICS, IMS, DB2,
WAS
Out of the Box debugger
and code coverage
capabilities
Integration with Fault
Analyzer for Dump Analysis
Integration with File
Manager for file and test
data handling
Integration with IBM Data
Studio for DB2 data access
and tooling capabilities
PL/I
Integration with Team
Concert for Lifecycle and
Source Management
Integration with RD&T for
flexible access to System z
environment
New

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RDz – Data Studio Integration
 Participate in the SQL Outline View with actions from the RDz COBOL, PLI editors
 Gathers the SQL from the source file, as well as any copy/include files containing EXEC SQL
statements, and loads the SQL Outline View.
 SQL Outline View Features:
 Navigate source selecting nodes in the view
 Run SQL
 Tune SQL
 Explain SQL

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DB2 JSON Support

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JSON is the Language of the Web
• JavaScript Object Notation
 Lightweight data interchange format
 Specified in IETF RFC 4627
 http://www.JSON.org
• Designed to be minimal, portable, textual and a
subset of JavaScript
 Only 6 kinds of values!
 Easy to implement and easy to use
 Text format, so readable by humans and
machines
• Language independent, most languages have
features that map easily to JSON
• Used to exchange data between programs
written in all modern programming languages
{
"firstName“ : "John",
"lastName" : "Smith",
"age" : 25,
“active” : true,
“freqflyer_num : null,
"address" :
{
"streetAddress“ : "21 2nd
Street",
"city" : "New York",
"state" : "NY",
"postalCode" : "10021"
},
"phoneNumber“ :
[
{
"type" : "home",
"number“ : "212 555-1234"
},
{
"type" : “mobile",
"number“ : "646 555-4567"
}
]
}

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New Era Application Requirements
• Some apps need very few database features, but need high
scale
• Desire to avoid data/schema pre-design altogether for
simple apps
• Store data from web/mobile apps in it's native form
• New web applications use JSON for storing and
 exchanging information
 Very lightweight – write more efficient apps
 It is also the preferred data format for mobile
 application back-ends
• Move from development to production in no time!
 Ability to create and deploy flexible JSON schema
 Gives power to application developers by reducing
 dependency on IT; no need to pre-determine schemas
 and create/modify tables
 Ideal for agile, rapid development and continuous integration
DB2

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• Combine data from “systems of engagement” with core enterprise
data
 Simplicity and agility of JSON + enterprise strengths of DB2
 Simplify data access when a single application’s data has different access
characteristics
• Maintains JSON simplicity and agility
 Interoperate seamlessly with modern applications
 Flexible schemas allow rapid delivery of applications
• Leverages DB2 Qualities of Services
 Security
 Management, operations
 High availability
• Delivers the best of both worlds
 Schema Agility and Enterprise Quality of Service
DB2 for z/OS Enterprise-class JSON Database
Agility with DB2 Qualities of Service

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JSON in SQL – First Steps
Extend JSON API Building blocks for external use
New functions released in DB2 11 only
 JSON2BSON - convert JSON string into BSON format
 BSON2JSON - convert BSON LOB into JSON string
 JSON_VAL - retrieve specific value from inside a BSON
object
INSERT INTO EMPLOYEE(data) VALUES (SYSTOOLS.JSON2BSON
(‘{ name: "Joe", age:28, isManager: false, jobs :[“QA”, “Developer”] } ’))
SELECT SYSTOOLS.BSON2JSON(data) FROM EMPLOYEE
UPDATE EMPLOYEE SET DATA =
SYSTOOLS.JSON2BSON('{ name: "Jane", age:18, isManager: false,
jobs :["Developer", "Team Lead"] } ')

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System BSystem B
JSONJSON
XMLXML
Both XML and JSON:
- Make schema evolution
simple in the database
- Coexist with relational data
JSON is used with human interfaces and mobile
applications and more making it straight-forward to pass
data structures back and forth
XML is typically used for data exchange or
shred between multiple parties, systems or
institutions providing the ability for 3rd
parties
to define portions of data structures
independently – e.g., banking, insurance
System ASystem A
JSON:
1) Easy to work with
2) Smaller in size
3) Suffices for most applications
XML and JSON : Choosing between the Two
http://www.ibm.com/developerworks/data/library/techarticle/dm-1403xmljson/index.html

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DB2 JSON – providing the best of both worlds
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JSON
API
SQL
API
SQL + JSON
API
JSON
{
“Product”: {
“SKU”: 11213,
“Name”: “Google
Glass”,
“Category”: {
},
“Size”: [ “S”, “M”,
“L” ]
}
}
Relational
Referential Integrity
Check constraints
Transactions
Geo-spatial
Scalability
Temporal
Security
Joins
Tunable
Consistency
Performance
& Scalability
Tools for higher
Productivity
Established
Security
Announced in
DB2 Accessories
Suite for z/OS

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Mobile/Cloud Initiative

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WebSphere Cast Iron Integration
Cloud
Applications
On-premise
ApplicationsCloud
Applications
On-premise
Applications
Speed &
Simplicity

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Mobile/Cloud support – Problem Statement
• Cloud and Mobile providers need a uniform way to interact with z-
based middleware for discovery, provisioning, data transformation,
and service invocation.
• Customers have expressed an interest in a common way to interact
with all z/OS business and infrastructure assets using REST and
JSON technology
 REST – Representational State Transfer … the Other use of HTTP URLs
that map to a ‘service’, such as ‘query account’ or ‘update data’
 JSON – JavaScript Object Notation … a standard of representing data as a
set of name/value pairs. This is passed back and forth along with REST
request/responses
• Ability to track and handle large spikes of new requests originating
from any number of almost instantly available clients.
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Solution – Introducing z/OS Connect
• Mobile and Cloud connectivity to backend z/OS assets
• Provides a consistent way to discover and call in to application assets on
z/OS
• Runs in Liberty profile
• Uses RESTful service and JSON payloads.
• Capable of converting JSON to data format required by backend service
• No additional cost, packaged with WAS, CICS and IMS
• Java, so runs on speciality engines
• Example of invocation
 http://<hostname>:<port>/zosConnect/services/CUSTOMER_INQ?
action=invoke<JSON payload>
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{
"firstName": "John",
"lastName": "Smith"
}

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Tooling for zOS Connect
– end to end development and testing
Data Web Services
of Data Studio or RDz
Config.xml
WSDL
Deploy to
bundled
zOS Connect
Data Web Services
Test Client
Deploy to
remote
zOS Connect CICS
IMS
WAS
DB2
z/OS
Connect
Database operations
ZOS Connect
artifacts
ZOS Connect on LPAR

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On-Premise API
Enablement
Mobile
Applications
DataPower
GW
appliance
DMZ
Enterprise
APIs
API
Management
Web Services
or REST based
services
Enterprise
Transaction
Processing
Enterprise
API s
Cloud -
Integration
Services
Mobile, Web,
Cloud App
Enablement
Service Enablement:
• Enables invocation of Z
services or applications by
remote applications using
standard protocols (REST)
API Enablement:
• Consumability by internal
and external developers
(creation and look up)
• Entitlement Management
(securing, workload
enforcement)
• Usage monitoring &
Analytics
Cloud Integration
Enablement:
• Enabling integration with
APIs as well as technical
services
Remote Application
Development:
• Invokes services and APIs
discovery
discovery/invocation
discovery/
invocation
DB2
CICS
IMS
Batch
Cloud-based
Services
Cloud APIs
IBM
Worklight
Server
DB2
CICS
IMS
Batch
z/OS
Connect
Access to systems of
records and enterprise
data via APIs
End to End Architecture for Mobile, Web, Cloud
applications invoking Z services using APIs

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Summary
DB2 for z/OS is the database of choice for
l Distributed apps
l Mobile apps
l Cloud enabled apps
l Analytics

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Thanks for your time!

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