OBJECTIVES Retrieve data by using Transact-SQL. . This
OBJECTIVES Retrieve data by using Transact-SQL. . This objective requires you to know how to access data in different ways, providing for different looks into the data with user-friendly views and other reporting methods from the data source. Filter data by using Transact-SQL. . You don t often want all the data from the tables. Usually queries want to limit the number of columns and rows displayed from the database. You need to limit and specifically apply conditions over the data that is transmitted to the user interface. Summarize data by using Transact-SQL. . A database system needs to generate other information beyond just the data. Arithmetic, statistical analysis, and other operations are needed in a full- service database implementation. Modify data by using Transact-SQL. . This objective requires you to also know how to modify existing data in a table using statements such as UPDATE. CHAPTER 4 Querying and Modifying Data
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