使用檔案群組和檔案來儲存資料

資料檔案可用於儲存資料庫檔案。 資料檔案被分成檔案群組。 Database 物件具有 FileGroups 屬性，這個屬性會參考 FileGroupCollection 物件。 該集合中的每個 FileGroup 物件都具有 Files 屬性。 這個屬性會參考 DataFileCollection 集合，其中包含資料庫所屬的所有資料檔。 檔案群組的主要功能是將用於儲存資料庫物件的檔案放入群組。 將一個資料庫物件散佈到數個檔案的其中一個理由就是改善效能，特別是如果檔案儲存在不同的磁碟機上。

每個自動建立的資料庫都具有名為 "Primary" 的檔案群組以及與資料庫同名的資料檔。 可以在集合中加入其他檔案和群組。

範例

在下列的程式碼範例中，您必須選取用於建立應用程式的程式設計環境、程式設計範本和程式設計語言。 如需詳細資訊，請參閱＜在 Visual Studio .NET 中建立 Visual Basic SMO 專案＞和＜在 Visual Studio .NET 中建立 Visual C# SMO 專案＞。

在 Visual Basic 中將 FileGroups 和 DataFiles 加入至資料庫

主要檔案群組和資料檔會使用預設的屬性值自動建立。 程式碼範例會指定某些可以使用的某些屬性值； 否則，系統會使用預設屬性值。

'Connect to the local, default instance of SQL Server.
Dim srv As Server
srv = New Server
'Reference the AdventureWorks2012 database.
Dim db As Database
db = srv.Databases("AdventureWorks2012")
'Define a FileGroup object called SECONDARY on the database.
Dim fg1 As FileGroup
fg1 = New FileGroup(db, "SECONDARY")
'Call the Create method to create the file group on the instance of SQL Server.
fg1.Create()
'Define a DataFile object on the file group and set the FileName property.
Dim df1 As DataFile
df1 = New DataFile(fg1, "datafile1")
df1.FileName = "c:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data\datafile2.ndf"
'Call the Create method to create the data file on the instance of SQL Server.
df1.Create()

在 Visual C# 中將 FileGroups 和 DataFiles 加入至資料庫

主要檔案群組和資料檔會使用預設的屬性值自動建立。 程式碼範例會指定某些可以使用的某些屬性值； 否則，系統會使用預設屬性值。

{
            Server srv = new Server();
            //Reference the AdventureWorks2012 database. 
            Database db = default(Database);
            db = srv.Databases["AdventureWorks2012"];
            //Define a FileGroup object called SECONDARY on the database. 
            FileGroup fg1 = default(FileGroup);
            fg1 = new FileGroup(db, "SECONDARY");
            //Call the Create method to create the file group on the instance of SQL Server. 
            fg1.Create();
            //Define a DataFile object on the file group and set the FileName property. 
            DataFile df1 = default(DataFile);
            df1 = new DataFile(fg1, "datafile1");
            df1.FileName = "c:\\Program Files\\Microsoft SQL Server\\MSSQL.1\\MSSQL\\Data\\datafile2.ndf";
            //Call the Create method to create the data file on the instance of SQL Server. 
            df1.Create();
        }

在 PowerShell 中將 FileGroups 和 DataFiles 加入至資料庫

主要檔案群組和資料檔會使用預設的屬性值自動建立。 程式碼範例會指定某些可以使用的某些屬性值； 否則，系統會使用預設屬性值。

# Set the path context to the local, default instance of SQL Server.
CD \sql\localhost\default\Databases\

#And the database object corresponding to AdventureWorks2012.
$db = get-item AdventureWorks2012

#Create a new filegroup
$fg1 = New-Object -TypeName Microsoft.SqlServer.Management.SMO.Filegroup -argumentlist $db, "SECONDARY"
$fg1.Create()

#Define a DataFile object on the file group and set the FileName property. 
$df1 = New-Object -TypeName Microsoft.SqlServer.Management.SMO.DataFile -argumentlist $fg1, "datafile1"

#Make sure to have a directory created to hold the designated data file
$df1.FileName = "c:\\TestData\\datafile2.ndf"

#Call the Create method to create the data file on the instance of SQL Server. 
$df1.Create()

在 Visual Basic 中建立、改變和移除記錄檔

程式碼範例會建立 LogFile 物件、變更其中一個屬性，然後將它從資料庫移除。

'Connect to the local, default instance of SQL Server.
Dim srv As Server
srv = New Server
'Reference the AdventureWorks2012 2008R2 database.
Dim db As Database
db = srv.Databases("AdventureWorks2012")
'Define a LogFile object and set the database, name, and file name properties in the constructor.
Dim lf1 As LogFile
lf1 = New LogFile(db, "logfile1", "c:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data\logfile1.ldf")
'Set the file growth to 6%.
lf1.GrowthType = FileGrowthType.Percent
lf1.Growth = 6
'Run the Create method to create the log file on the instance of SQL Server.
lf1.Create()
'Alter the growth percentage.
lf1.Growth = 7
lf1.Alter()
'Remove the log file.
lf1.Drop()

在 Visual C# 中建立、改變和移除記錄檔

程式碼範例會建立 LogFile 物件、變更其中一個屬性，然後將它從資料庫移除。

//Connect to the local, default instance of SQL Server. 
            Server srv = new Server();
            //Reference the AdventureWorks2012 database. 
            Database db = default(Database);
            db = srv.Databases["AdventureWorks2012"];
            //Define a LogFile object and set the database, name, and file name properties in the constructor. 
            LogFile lf1 = default(LogFile);
            lf1 = new LogFile(db, "logfile1", "c:\\Program Files\\Microsoft SQL Server\\MSSQL.10_50.MSSQLSERVER\\MSSQL\\Data\\logfile1.ldf");
            //Set the file growth to 6%. 
            lf1.GrowthType = FileGrowthType.Percent;
            lf1.Growth = 6;
            //Run the Create method to create the log file on the instance of SQL Server. 
            lf1.Create();
            //Alter the growth percentage. 
            lf1.Growth = 7;
            lf1.Alter();
            //Remove the log file. 
            lf1.Drop();
  

在 PowerShell 中建立、改變和移除記錄檔

程式碼範例會建立 LogFile 物件、變更其中一個屬性，然後將它從資料庫移除。

#Load the assembly containing the enums used in this example
[reflection.assembly]::LoadWithPartialName("Microsoft.SqlServer.SqlEnum")

# Set the path context to the local, default instance of SQL Server.
CD \sql\localhost\default\Databases\

#And the database object corresponding to AdventureWorks2012
$db = get-item AdventureWorks2012

#Create a filegroup
$fg1 = New-Object -TypeName Microsoft.SqlServer.Management.SMO.Filegroup -argumentlist $db, "Secondary"

#Call the Create method to create the file group on the instance of SQL Server. 
$fg1.Create()

#Define a LogFile object on the file group and set the FileName property. 
$lf1 = New-Object -TypeName Microsoft.SqlServer.Management.SMO.LogFile -argumentlist $db, "LogFile2"

#Set a location for it - make sure the directory exists
$lf1.FileName = "logfile1", "c:\\Program Files\\Microsoft SQL Server\\MSSQL.10_50.MSSQLSERVER\\MSSQL\\Data\\logfile1.ldf"

#Set file growth to 6%
$lf1.GrowthType = [Microsoft.SqlServer.Management.Smo.FileGrowthType]::Percent
$lf1.Growth = 6.0

#Call the Create method to create the data file on the instance of SQL Server. 
$lf1.Create()

#Alter a value and drop the log file
$lf1.Growth = 7.0
$lf1.Alter()
$lf1.Drop()
  

請參閱

參考

FileGroup

概念

資料庫檔案與檔案群組