Can you explain the difference between an ADO.NET Dataset
and an ADO Recordset?
- 3 Answers
- 4898 Views
- Siebel Systems, I also Faced
- E-Mail Answers
Answer Posted / 1647264
Let's take a look at the differences between ADO Recordset and ADO.Net DataSet:
1. Table Collection: ADO Recordset provides the ability to navigate through a single table of information. That table would have been formed with a join of multiple tables and returning columns from multiple tables. ADO.NET DataSet is capable of holding instances of multiple tables. It has got a Table Collection, which holds multiple tables in it. If the tables are having a relation, then it can be manipulated on a Parent-Child relationship. It has the ability to support multiple tables with keys, constraints and interconnected relationships. With this ability the DataSet can be considered as a small, in-memory relational database cache.
2. Navigation: Navigation in ADO Recordset is based on the cursor mode. Even though it is specified to be a client-side Recordset, still the navigation pointer will move from one location to another on cursor model only. ADO.NET DataSet is an entirely offline, in-memory, and cache of data. All of its data is available all the time. At any time, we can retrieve any row or column, constraints or relation simply by accessing it either ordinarily or by retrieving it from a name-based collection.
3. Connectivity Model: The ADO Recordset was originally designed without the ability to operate in a disconnected environment. ADO.NET DataSet is specifically designed to be a disconnected in-memory database. ADO.NET DataSet follows a pure disconnected connectivity model and this gives it much more scalability and versatility in the amount of things it can do and how easily it can do that.
4. Marshalling and Serialization: In COM, through Marshalling, we can pass data from 1 COM component to another component at any time. Marshalling involves copying and processing data so that a complex type can appear to the receiving component the same as it appeared to the sending component. Marshalling is an expensive operation. ADO.NET Dataset and DataTable components support Remoting in the form of XML serialization. Rather than doing expensive Marshalling, it uses XML and sent data across boundaries.
5. Firewalls and DCOM and Remoting: Those who have worked with DCOM know that how difficult it is to marshal a DCOM component across a router. People generally came up with workarounds to solve this issue. ADO.NET DataSet uses Remoting, through which a DataSet / DataTable component can be serialized into XML, sent across the wire to a new AppDomain, and then Desterilized back to a fully functional DataSet. As the DataSet is completely disconnected, and it has no dependency, we lose absolutely nothing by serializing and transferring it through Remoting.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is bson in web api?
8. Why do you want to work here?
What is web api vs wcf?
What is a 401 redirect?
Which is the best institute to learn Microsoft Technologies and the faculty if you Know?
Is there any property names “isnavigating”?
hi .net gurus. plz if any one has dumps on 70-631 and 70-541 on windows sharepoint services kindly mail me.
What is the most appropriate lifetime for a database connection/orm context in an asp.net mvc application? : Asp.Net MVC
Disable browser cache for entire ASP.NET website?
How to deploy/publish webservices?How many ways?Plz explain me
Explain server-side scripting?
What are the types of validation in asp net?
How to create multi language website in asp.net mvc? : Asp.Net MVC
What are the two properties that are common on every validation control?
Explain some of the major built-in objects in asp.net
