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 ThyssenTechnical Sales and SolutionsAnalytics on System z



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• Traditionally:l CICS/IMS transactions written in Cobol or PL/1 accessing DB2 l Batch programs accessing DB2l Normally well written and good performing SQLl Everything on System z

• Today also:l Dynamic SQL from distributed applications

l Hand-coded or generated SQL (loved by every DBA)l All kinds of programming languages

l Native stored procedures (next session!)l Mobile apps – driving a lot of the growth on System zl Analytics

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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 upCobol not on the list...



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DB2 Drivers – Panoramic View

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PhP Python/Jython Ruby/JRubyJavascript

node.jsScala

Zend framework adapters

SqlAlchemy/Django Adapter

DB2

DB2 CLI and ODBC driver DB2 JCC JDBC driver

Rails Adapter

Liftnode-odbc node.jsJSON driver

c

Python interpreter

java c

Ruby interpreter

java

Java

JDBC API

pureQueryAPI

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

8CLI 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 intonative z/OS APIs

T2u subsystem calls native LUW

APIs

JDBC Application

SQLJ Application

CCC

RRS

DB2, IDS

DRDA overTCP/IP

DRDA Shared memory to local UDB

DB2 for z/OS

DB2 Connect APIs - JDBC

l © 2013 International Business Machines Corporationl 1

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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 OptimizationImprove 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 DatabaseAgility with DB2 Qualities of Service



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JSON in SQL – First StepsExtend 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 EMPLOYEEUPDATE 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 with2) 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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JSONAPI

SQLAPI

SQL + JSONAPI

JSON

{“Product”: { “SKU”: 11213, “Name”: “Google Glass”, “Category”: {}, “Size”: [ “S”, “M”, “L” ] }}

RelationalReferential IntegrityCheck constraintsTransactionsGeo-spatialScalabilityTemporalSecurityJoins

Tunable Consistency

Performance & Scalability

Tools for higherProductivity

Established Security

Announced inDB2 AccessoriesSuite for z/OS



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Mobile/Cloud Initiative



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WebSphere Cast Iron Integration

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CloudApplications

On-premiseApplicationsCloud

Applications

On-premiseApplications

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 ServicesTest Client

Deploy to remotezOS Connect

CICSIMSWASDB2

z/OSConnect

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

DB2CICSIMS

Batch

Cloud-based Services

Cloud APIs

IBM Worklight

Server

DB2CICSIMS

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 appsl Mobile appsl Cloud enabled appsl Analytics



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Thanks for your time!

trends and directions for application developers

Technology

db2 luw

db2 trends

ibm data server db2

db2 drivers panoramic

command update command

data provider

data sources

apis cli c