Getting Started with IBM Data Studio for DB2

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86 Getting Started with IBM Data Studio for DB2 2.4.4 Creating views Views provide another way of representing the data that exists in the tables of a database. Views don’t contain the data, but they allow you to writeSELECT andJOIN statements to represent data stored in tables without exposing the details of how the data is actually structured. You can use a view to select an entire table, join together multiple tables, or omit specific columns as a way to restrict access to the data. To create a view of columns in a single table or in multiple tables: 1. Right-click the Views folder in the Administration Explorer and select Create View. You must select the schema in which to create the view. SelectMYSCHEMA and click OK. The Properties view will display the attributes of the new view, as shown in Figure 2.19. 2.19 – Defining a new view 2. In the General tab, specify the name of the view,MYVIEW. 3. In the SQL tab, define the columns for this view, using an SQL query. Type the following query in the Expression field to select theEMP_ID andADDRESS columns fromMYTABLE: SELECT "EMP_ID", "ADDRESS" FROM "MYSCHEMA"."MYTABLE" 4. Click Update to update your view definition. In the planned changes bar of the object list editor, you see the count of new and changed objects updated to include the new view. In the next section, you will deploy the new view to the database, along with the other objects in the change plan. 2.4.5 Deploying multiple changes with a change plan In the previous sections, you created a set of changes to a database in a change plan. A change plan groups multiple related changes together and allows you to deploy them in a single step. This section will show you how to deploy the changes to the database. To deploy the change plan to the database: 1. In the object list editor, review the number of new and changed objects by clicking the delta icon. Then, click the Review and Deploy Changes button, shown in Figure 2.20. Data Studio opens the Review and Deploy window, with a preview of the commands that will be used to deploy the changes to the database.
Chapter 2 – Managing your database environment 87 Figure 2.20 – Review and deploy the changes from the object list editor The Review and Deploy window opens, as shown in Figure 2.21. The options in this window determine how the commands will deploy the changes to the database.
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3 Notices This information was deve
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Table of contents 5 Table of conten
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3.3.1 Exporting data...............
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Chapter 7 - Tuning queries ........
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Preface 13 Keeping your skills curr
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around the world have participated
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17 About the authors Dimple Bhatia
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Contributors 19 The following peopl
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21 Acknowledgements The authors owe
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24 Getting Started with IBM Data St
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159 Chapter 5 - Creating SQL and XQ
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355 Appendix D - The Sample Outdoor
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Appendix E - Advanced topics for de
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E.5.4 Data web services artifacts A
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References 391 References [1] HAYES
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References 393 Books and articles 1
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Getting Started with IBM Data Studio for DB2

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