What is a snapshot recordset?
Snapshot-type Recordset— a static copy of a set of records that you can use to find data or generate reports. A snapshot-type Recordset object can contain fields from one or more tables in a database but can’t be updated. This type corresponds to an ODBC static cursor.
What is Recordset in Visual Basic?
A recordset is a data structure that consists of a group of database records, and can either come from a base table or as the result of a query to the table. The concept is common to a number of platforms, notably Microsoft’s Data Access Objects (DAO) and ActiveX Data Objects (ADO).
What is Access dynaset?
A dynaset is a temporary set of data taken from one or more tables in the underlying file. A dynaset may be a query that was defined in an Access database, a single table, a subset of a table, or the result of joining multiple tables. A dynaset can be updated if the file is not locked or opened for ReadOnly.
What is a snapshot in Access?
Snapshot Viewer (Snapshot) is a utility that creates a picture—a snapshot if you will—of an Access report. It’s a lot like Access’s Print Preview feature, but without Access.
Are Dynasets permanent?
A dynaset is dynamic and temporary. In contrast, a table is static and permanent. A dynaset reflects what is in the underlying table when the query is run.
What does Dynaset inconsistent updates mean?
If you choose Dynaset (Inconsistent Updates), you can update any field that isn’t a result of a calculation, but you might update data that you didn’t intend to be updateable.”
What is snapshot database?
A database snapshot is a read-only, static view of a SQL Server database (the source database). The database snapshot is transactionally consistent with the source database as of the moment of the snapshot’s creation. A database snapshot always resides on the same server instance as its source database.
What is Oracle snapshot?
Oracle uses snapshots, also referred to as materialized views, to replicate data to non-master sites in a replicated environment and to cache “expensive” queries in a data warehouse environment.
What’s the difference between snapshot and dynaset recordset?
A dynaset-type Recordset object is a type of Recordset object you can use to manipulate data in an underlying database table or tables. It differs from a snapshot-type Recordset object because the dynaset stores only the primary key for each record, instead of actual data.
How are records reflected in the dynaset table?
Records your application adds to or deletes from the recordset are reflected in your dynaset. Records that other users add to the table will not be reflected in your dynaset until you rebuild the dynaset by calling its Requery member function. When other users delete records, MFC code skips over the deletions in your recordset.
How to create dynaset-type Recordset object ( DAO )?
To create a dynaset-type Recordset object, use the OpenRecordset method on an open database, against another dynaset- or snapshot-type Recordset object, on a QueryDef object, or on a TableDef object. (Opening Recordset objects on other Recordset objects or TableDef objects is available only in Microsoft Jet workspaces .)
What is a dynaset and what does it mean?
A dynaset is a recordset with dynamic properties. During its lifetime, a recordset object in dynaset mode (usually called a dynaset) stays synchronized with the data source in the following way.