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Some basic steps are required in order to be able to access and manipulate data using ADO : Create a connection object to connect to the database. Create a recordset object in order to receive data in. Open the connection; Populate the recordset by opening it and passing the desired table name or SQL statement as a parameter to open function.
A command object can be used by simply specifying a table name or a stored procedure as the command text, it need not be an SQL statement. However depending on your table size, row length, the information you are retrieving, it might be better to issue an SQL statement, since you can select a subset of columns and use a WHERE clause to filter.
Microsoft Data Access Components (MDAC; also known as Windows DAC) is a framework of interrelated Microsoft technologies that allows programmers a uniform and comprehensive way of developing applications that can access almost any data store. Its components include: ActiveX Data Objects (ADO), OLE DB, and Open Database Connectivity (ODBC).
A database object is a structure for storing, managing and presenting application- or user-specific data in a database. Depending on the database management system (DBMS), many different types of database objects can exist. [1] [2] The following is a list of the most common types of database objects found in most relational databases (RDBMS):
Enterprise Objects Framework, Mac OS X/Java, part of Apple WebObjects; Hibernate, open-source ORM framework, widely used; Java Data Objects (JDO) JOOQ Object Oriented Querying (jOOQ) Kodo, commercial implementation of both Java Data Objects and Java Persistence API; TopLink by Oracle
It is compatible with indexed sequential access method , Structured Query Language , and ActiveX Data Objects (ADO) data access methods, reads and writes several flat file desktop database formats including ASCII, comma-separated values (CSV), DOS (binary), FoxPro, Clipper, dBase, and some relational databases via ODBC, Microsoft SQL Server ...
OLE DB (Object Linking and Embedding, Database, sometimes written as OLEDB or OLE-DB) is an API designed by Microsoft that allows accessing data from a variety of sources in a uniform manner. The API provides a set of interfaces implemented using the Component Object Model (COM); it is otherwise unrelated to OLE .
In software, a data access object (DAO) is a pattern that provides an abstract interface to some type of database or other persistence mechanism. By mapping application calls to the persistence layer, the DAO provides data operations without exposing database details. This isolation supports the single responsibility principle.