Apr 09, 2015 Why You Absolutely Need Alternate Keys: A Unique Constraint Story Richie Rump Database, SQL Server 1 Database Design, SQL Server Although often forgotten, alternate keys are an essential part of database design especially if you’re using surrogate keys. Jun 14, 2016 Create License key, Activation Key, Serial Key Maker, Generate Product Key, Validate a software License Key in C#.NET. The C# Basics beginner course is a free C# Tutorial Series that helps. The bytes in the key are not related to the caller or CMK that is used to encrypt the data key. To generate a data key, specify the symmetric CMK that will be used to encrypt the data key. You cannot use an asymmetric CMK to generate data keys.
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Product overview
These resources provide an overview of IBM Data Studio.
- IBM Data Studio product page: Get an overview of Data Studio and its features and benefits from this web page.
- IBM Data Studio features: by component and data server: View this web page for a list of the features of Data Studio supported for various data servers.
- What's new and changed in IBM Data Studio: Learn about the new enhanced capabilities of Data Studio from this web page. You can also view details about changed or deprecated features.
- Getting started with IBM Data Studio for DB2: This free ebook explains how to install the Data Studio components, how to get started, and how to do key administration and application development tasks with Data Studio.
- Getting started in IBM Data Studio: This topic explains how the Data Studio client and web console components work together, and how to set up Data Studio in a team environment.
- Overview of IBM Data Studio: Read this topic to learn about IBM Data Studio, which consists of the client and web console. Use the client for database and database instance administration, application development, and query tuning tasks. Use the web console to monitor health and availability and to create and manage jobs.
- IBM Data Studio information center: The information center contains overview, conceptual, and task information for Data Studio.
Solutions
Use these resources for information about database management solutions.
- Overview of the InfoSphere Optim data management solution: Learn about the integrated tools that can help you with your tasks and responsibilities throughout the data lifecycle.
Planning
Before you install Data Studio, consult the following resources.
- System requirements for IBM Data Studio: This web page lists the hardware and software requirements for installing and running Data Studio.
- Mapping between Control Center and Data Studio capabilities: If you are familiar with the DB2 Control Center, this topic provides a mapping between the tasks that you did in the Control Center to the features of Data Studio and other tools you can use for those tasks.
- Migrating from DB2 Control Center to IBM Data Studio: Learn how DB2 users can transition from the deprecated DB2 Control Center to Data Studio to perform the same administration tasks and more. https://newlabels101.weebly.com/blog/corel-draw-graphic-suite-x5-key-generator-free-download.
- Limitations for sharing a common environment between IBM products based on Eclipse: See this web page to learn about the problems that might occur when you use Installation Manager to install certain Eclipse-based products, including Data Studio, into a shell-shared group.
- Virtualizing InfoSphere Optim database tools with Citrix XenApp: Learn how to provide virtualized access to Data Studio and other Optim tools on a Citrix XenApp server so that users can perform application development tasks.
Installing
The following resources will help you to install the Data Studio components.
- Download IBM Data Studio: You can download the product from this web page.
- Installing IBM Data Studio client: Use this topic as the starting point for installing the Data Studio client.
- Installing and configuring Data Studio web console: Use this topic as the starting point for installing the Data Studio web console.
Configuring
The following information center topics will help you configure the Data Studio components.
- Setting up your work environment for database tasks: Learn how to connect to databases, create data development and design projects, and configure a team environment for your Data Studio work environment.
- Configuring DB2 databases and subsystems for use with no-charge tuning features in IBM Data Studio: Learn about the facilities and objects you must enable on a DB2 data server before you can use Data Studio to tune single SQL statements that run on the data server.
- Configuring the web console: Learn how you can enable access to the Data Studio web console by performing important security tasks, including resetting the default password and updating secure login certificates.
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Designing
Consult these resources to understand how logical design and database modeling help to create an effective data management system.
- Working with data diagrams: Use this topic to learn how you can use data diagrams in Data Studio to visualize and edit your data projects.
- Modifying physical data models: This topic explains how to modify database-specific models that represent your relational data objects and their relationships. You can use these models to generate DDL statements and deploy them to a data server.
- InfoSphere Data Architect information roadmap: For more robust data modeling and data integration capabilities, you can use InfoSphere Data Architect. This information roadmap provides links to key resources for that product.
Developing
Use these resources to learn how to best use Data Studio to develop database applications.
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- Creating scripts more efficiently in the SQL and XQuery editor: Read this article to learn how to use the features of this editor to enhance the capabilities of your database applications. The editor also gives you access to tools that help analyze and tune the performance of SQL queries.
- Create, test, and deploy a DB2 SQL stored procedure: This tutorial explains how to create, test, deploy, and debug stored procedures on your data servers with Data Studio.
- Developing web services with the workbench: Use this topic to learn how to use the Data Studio client to create and deploy web services that expose your database operations to client applications.
- Developing Database Applications with IBM Data Studio and pureQuery: This intensive three-day course will teach you how to use Data Studio and InfoSphere® Optim™ pureQuery™ Runtime tools to develop database applications.
- InfoSphere Optim pureQuery Runtime information roadmap: Data Studio includes a copy of IBM InfoSphere Optim pureQuery Runtime for use on the same computer as the Data Studio client, which you can use to build high-quality, better-performing database applications. This information roadmap provides links to key resources for that product.
Administering
Use these resources to help you administer and manage databases with Data Studio.
- Administering databases with task assistants: This topic provides the main steps and illustrations to show how to use any task assistant in Data Studio. You use task assistants to create and run database administration commands.
- Managing and scheduling database jobs with the Data Studio Web Console: This tutorial describes how to schedule and automate database operations with the job manager in the Data Studio web console.
- Creating and managing jobs: Read this topic to learn how to create, schedule, and manage jobs with the Data Studio web console job manager. You can also perform some job-related tasks with the Data Studio client components if you configure them to work with the web console.
- Use database catalog filtering in IBM Data Studio to view, manage, and work with database objects efficiently: This article describes a new Data Studio capability that filters a vast amount of cached metadata to significantly enhance the network and tool performance for object management tasks.
- Scenario: Making basic database object changes with a change plan: This topic provides steps and illustrations for a scenario in which you make a change to the sample GSDB database. In the scenario, you use the change plan feature to contain the changes, identify impacted objects, and generate the command to apply the change.
- Configure automatic maintenance in DB2 for Linux, UNIX, and Windows using IBM Data Studio: This article explains how to use Data Studio to perform database backups, keep statistics current, and reorganize tables and indices as necessary on a DB2 data server.
Tuning
These resources can help you tune SQL statements to improve query and workload performance.
- Tuning single SQL statements: This topic provides an overview of the steps that are involved in tuning single SQL statements with Data Studio.
- Formatting SQL statements: This topic explains how to use the workflow assistant for query tuning in Data Studio to format an SQL statement so that you can better understand the structure of that statement.
- Generating visual representations of access plans: This topic explains how the workflow assistant for query tuning in Data Studio can display the access plan for a statement as a diagram.
- InfoSphere Optim Query Tuner and InfoSphere Optim Workload Query Tuner information roadmap: For a more in-depth set of solutions to improve the performance of queries and query workloads, you can use InfoSphere Optim Query Tuner and InfoSphere Optim Query Workload Tuner. This information roadmap provides links to key resources for those product.
Monitoring
These resources explain how you can analyze database activity and performance.
- Monitoring database health and availability: Use this topic to learn how to keep track of the health information of your databases with the Data Studio web console.
- Optim Performance Manager information roadmap: For a more comprehensive set of tools to identify, diagnose, solve, and prevent database performance problems, you can use Optim Performance Manager. This information roadmap provides links to key resources for that product.
Troubleshooting
These resources provide you with information about identifying and resolving problems with Data Studio.
- IBM Data Studio software support: Consult this web page for general support information regarding Data Studio.
- Troubleshooting and support: Use these topics for troubleshooting database administration tasks and for details about contacting and gathering information for IBM Support.
Creating and managing keys is an important part of the cryptographic process. Symmetric algorithms require the creation of a key and an initialization vector (IV). The key must be kept secret from anyone who should not decrypt your data. The IV does not have to be secret, but should be changed for each session. Asymmetric algorithms require the creation of a public key and a private key. The public key can be made public to anyone, while the private key must known only by the party who will decrypt the data encrypted with the public key. This section describes how to generate and manage keys for both symmetric and asymmetric algorithms.
Symmetric Keys
The symmetric encryption classes supplied by the .NET Framework require a key and a new initialization vector (IV) to encrypt and decrypt data. Whenever you create a new instance of one of the managed symmetric cryptographic classes using the parameterless constructor, a new key and IV are automatically created. Anyone that you allow to decrypt your data must possess the same key and IV and use the same algorithm. Generally, a new key and IV should be created for every session, and neither the key nor IV should be stored for use in a later session.
To communicate a symmetric key and IV to a remote party, you would usually encrypt the symmetric key by using asymmetric encryption. Sending the key across an insecure network without encrypting it is unsafe, because anyone who intercepts the key and IV can then decrypt your data. For more information about exchanging data by using encryption, see Creating a Cryptographic Scheme.
The following example shows the creation of a new instance of the TripleDESCryptoServiceProvider class that implements the TripleDES algorithm.
When the previous code is executed, a new key and IV are generated and placed in the Key and IV properties, respectively.
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Sometimes you might need to generate multiple keys. In this situation, you can create a new instance of a class that implements a symmetric algorithm and then create a new key and IV by calling the GenerateKey and GenerateIV methods. The following code example illustrates how to create new keys and IVs after a new instance of the symmetric cryptographic class has been made.
When the previous code is executed, a key and IV are generated when the new instance of TripleDESCryptoServiceProvider is made. Another key and IV are created when the GenerateKey and GenerateIV methods are called.
Asymmetric Keys
The .NET Framework provides the RSACryptoServiceProvider and DSACryptoServiceProvider classes for asymmetric encryption. These classes create a public/private key pair when you use the parameterless constructor to create a new instance. Asymmetric keys can be either stored for use in multiple sessions or generated for one session only. While the public key can be made generally available, the private key should be closely guarded.
A public/private key pair is generated whenever a new instance of an asymmetric algorithm class is created. After a new instance of the class is created, the key information can be extracted using one of two methods:
- The ToXmlString method, which returns an XML representation of the key information.
- The ExportParameters method, which returns an RSAParameters structure that holds the key information.
Both methods accept a Boolean value that indicates whether to return only the public key information or to return both the public-key and the private-key information. An RSACryptoServiceProvider class can be initialized to the value of an RSAParameters structure by using the ImportParameters method.
Asymmetric private keys should never be stored verbatim or in plain text on the local computer. If you need to store a private key, you should use a key container. For more on how to store a private key in a key container, see How to: Store Asymmetric Keys in a Key Container.
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The following code example creates a new instance of the RSACryptoServiceProvider class, creating a public/private key pair, and saves the public key information to an RSAParameters structure.