change-tracking

问题 I am developing an application which will expose WCF services. I am using Entity Framework 4.1 at the DAL. The problem is when I load some entity (let say a Customer that has Order which in turn has OrderDetail). After loading it I make some changes in Customer, Order and OrderDetail objects (some new orders are added and some existing orders are removed/updated) and send the object graph to WCF service to update it as following. Customer oCustomer; using(var context = new MyContext) /

问题 I'm working on SQL Server 2016 SP1 with the Change Tracking feature and I have a question for you. I have a database which has Change Tracking enabled. That database contains a table Table which has "change tracking" activated, but not "track columns updated" option. For the example, on Table , I only have one column called Id of type is "uniqueidentifier", which is my PK. On start, my change tracking current version is 0. I got it with : SELECT CHANGE_TRACKING_CURRENT_VERSION(); I added a

问题 What tools are you using to track changes in your MySQL database? Currently I'm in a project where we use a plain text-file (version controlled via SVN) in which we manually add SQL statements when making changes to the database. Many of the changes magically disappears every now and then, and we are now looking for a better way to change track our database. EDIT: One thing that I forgot to mention, we are using stored procedures and functions, so it's not only the database structure that we

问题 Before I delve into the abyss of Microsoft documentation any deeper, I'd like to know if someone experienced with Change Data Capture and Change Tracking know if one or both of these can be used to replace the traditional ... "Audit trail table copy of the 'real table' (all of the fields of the original table, plus date/time, user ID, and DML action field) inserted into by Triggers" ... setup for a database table audit trail, where the trigger populates the audit trail table (which is all

问题 Before I delve into the abyss of Microsoft documentation any deeper, I'd like to know if someone experienced with Change Data Capture and Change Tracking know if one or both of these can be used to replace the traditional ... "Audit trail table copy of the 'real table' (all of the fields of the original table, plus date/time, user ID, and DML action field) inserted into by Triggers" ... setup for a database table audit trail, where the trigger populates the audit trail table (which is all

问题 This question already has answers here : Global setting for AsNoTracking()? (5 answers) Closed 6 years ago . I have a context to a read-only database for reporting and I am writing lots of code, like this: using (var context = new ReportingContext()) { var reportXQuery = context.ReportX.AsNoTracking(); // Do stuff here with query... } Is there a way to set the AsNoTracking bit so that just new ing up the ReportingContext above would automatically use AsNoTracking instead of needing to

问题 What is the best way to know when an Elastic Search index needs updating, assuming the upstream data source is transactional SQL Server tables with inserts, updates and deletes? Examples: Tables Parent, Child, Grandchild. Parent | Child | Grandchild ID Name | ID ParentID Name | ID ChildID Amount 1 Foo | 10 1 Bike | 100 10 5 2 Bar | 20 1 Car | 200 20 2 3 Baz | 30 3 Tran | 300 30 1 Grandchild is updated, and Elastic Search index on Parent needs to be updated for the associated record. So, on

问题 I'm building a layer over an application that needs to catch the changes happens to the data and update another system with these changes (SIF) and I faced a problem with a specific table, the application truncates the table, and insert a new set of records every time the data reconciled. In order to solve this problem, I used a shadow table and Merged the records from the original table, and as I found that I might use the same method with other tables in the future, I created a generic SP

问题 I am using EF 6.1 Code First and want to track history data by using a model which (simplified) looks like this: public class Customer : IHistoryData<CustomerData> { public Guid ID { get; set; } public virtual ISet<CustomerData> Versions { get; set; } } public class CustomerData : HistoricalData { public string Name { get; set; } } public interface IHistoryData<T> where T : HistoricalData { ISet<T> Versions { get; set; } } public class HistoricalData { public int VersionID { get; set; }

问题 using EF 4.3.1 in SaveChanges(), i'm trying to get a list of all entries for entities which implement a specific interface. My entities implement multiple interfaces, one of which is IAuditable. The following doesn't return any entries, even though entries with entities of type IAuditable do exist. var auditableEntities = ChangeTracker.Entries<IAuditable>().Where( e => e.State == EntityState.Modified | e.State == EntityState.Added); 来源： https://stackoverflow.com/questions/12970257