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SQL Server Default Column ValuesSQL Server Default Column Values
The eleventh part of the SQL Server Programming Fundamentals tutorial considers the use of default column values. These are literal values or functions that are used to provide default values for columns when new table rows are created.
SQL Server Identity ColumnsSQL Server Identity Columns
The twelfth part of the SQL Server Programming Fundamentals tutorial describes identity columns. By applying an identity specification to a numeric column, the column's value is defaulted to a new value for every row inserted into the table.
SQL Server Computed ColumnsSQL Server Computed Columns
The thirteenth part of the SQL Server Programming Fundamentals tutorial investigates computed columns. Values in these columns are calculated automatically by the database management system using an expression that is attached to the column definition.
SQL Server Unique ConstraintsSQL Server Unique Constraints
The fourteenth part of the SQL Server Programming Fundamentals tutorial discusses unique constraints. This type of constraint adds a rule to a table to ensure that no two rows contain duplicate information within the constrained columns.
SQL Server Indexes Part 1SQL Server Indexes Part 1
The fifteenth part of the SQL Server Programming Fundamentals tutorial describes indexes. Indexes provide a lookup facility for a table, allowing rows to be found more quickly and without the need to scan the data in every row when querying a table.
SQL Server Indexes Part 2SQL Server Indexes Part 2
The sixteenth part of the SQL Server Programming Fundamentals tutorial continues the review of indexes in SQL Server 2005 databases. This article expands upon an earlier discussion of indexes, implementing them with SQL Server Management Studio and T-SQL.
Database NormalisationDatabase Normalisation
The sixteenth part of the SQL Server Programming Fundamentals tutorial discusses the concept of database normalisation. Normalisation is a database design technique that minimises duplication of information, reducing the risk of introducing data errors.
SQL Server Foreign KeysSQL Server Foreign Keys
The eighteenth part of the SQL Server Programming Fundamentals tutorial examines the use of foreign key constraints. These constraints define relationships between two tables, enforcing referential integrity to avoid orphaned rows in normalised tables.
Transact-SQL JoinsTransact-SQL Joins
The nineteenth part of the SQL Server Programming Fundamentals tutorial returns to the topic of querying. In this article, we examine joins using Transact-SQL (T-SQL). Joins allow data from several tables to be combined in a single set of results.
Using Transactions in SQL ServerUsing Transactions in SQL Server
The twentieth part of the SQL Server Programming Fundamentals tutorial describes the use of transactions. Transactions allow you to execute several related T-SQL statements and ensure that the database remains consistent if one of the commands fails.
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