Here is an example using __mapper_args__ and a synthetic primary_key. Because the table is time-series oriented data, there is no need for a primary key. All rows can be unique addresses with a (timestamp, pair) tuple. class Candle(Base): __tablename__ = "ohlvc_candle" __table_...
I don't know how to programatically interact with Package Manager, but I did manage to figure out how to programatically fire the "update-database" process. Just add the following line just after you set the value of "DataDirectory": Database.SetInitializer(new MigrateDatabaseT...
database scripts and schema excerpts are used to implement a stored procedure that returns the data contained by theSalesOrderDetailtables related to a singleSalesOrderHeader. (TheFK_SalesOrderDetail_SalesOrderHeader_SalesOrderIDassociation in the Sales Model can do the same thing as this example.). ...
Because pub/sub ACL syntax was added in Redis 6.2, you can't associate the Full Access ACL with database versions 6.0 or lower after this change. The Full Access ACL is not reverted if you change acl-pubsub-default to permissive again. Every database with the default user enabled uses ...
In this article, we will try to find out an answer to the “Could you Define Deadlocks with a Simple Example” question that might be asked for the database administrator interviews. Define Deadlock with a Simple Example Deadlock is a very complicated issue and sometimes it can be laborious...
To generate the database using SQL Server Management StudioUse the following script in SQL Server Management Studio to generate the database used in this example and the example How to: Define a Model with Table-per-Type Inheritance (Entity Framework). Point to New on the File menu and then...
The new data source appears in theData Sourcesfolder in Solution Explorer. To define a data source based on an existing connection In Business Intelligence Development Studio, open the Analysis Services project or connect to the Analysis Services database in which you want to define the data sourc...
Execute the following Transact-SQL scripts to create the modification stored procedures in the AdventureWorks database: CreateSalesOrderDetailprocedure: USE [AdventureWorks] GO SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO IF OBJECT_ID ( 'dbo.CreateSalesOrderDetail', 'P' ) IS NOT NULL DROP PR...
If the second table doesn't already contain a column with the same name as the primary key, the modeler adds it to the second table as a foreign key. Note:If relationship lines disappear, on theDatabasemenu, point toOptions, and clickDocument. On theRelationship...
If theFootprint Featurecontains any curved line segments, use theDensifytool to replace these segments with straight line segments. If no collections exist in the BIS geodatabase, theCollectionparameter will be disabled. If no extended metadata fields exist in the BIS geodatabase, theExtended Meta...