Access Database Engine – Wikipedia

The first version of Jet was developed in , consisting of three modules which could be used to manipulate a database. Microsoft Access and Visual Basic use or have used Jet as their underlying database engine.

For larger database needs, Jet databases can be upgraded or, in Microsoft parlance, “up-sized” to Microsoft’s flagship SQL Server database product. A five billion record MS Jet Red database with compression and encryption turned on requires about one terabyte of disk storage space [ citation needed ].

Jet, being part of a relational database management system RDBMS , allows the manipulation of relational databases. It offers a single interface that other software can use to access Microsoft databases and provides support for security, referential integrity , transaction processing , indexing , record and page locking, and data replication. In later versions, the engine has been extended to run SQL queries, store character data in Unicode format, create database views and allow bi-directional replication with Microsoft SQL Server.

Jet allows multiple users to access the database concurrently. To prevent that data from being corrupted or invalidated when multiple users try to edit the same record or page of the database, Jet employs a locking policy. Any single user can modify only those database records that is, items in the database to which the user has applied a lock , which gives exclusive access to the record until the lock is released. In Jet versions before version 4, a page locking model is used, and in Jet 4, a record locking model is employed.

Microsoft databases are organized into data “pages”, which are fixed-length 2 kB before Jet 4, 4 kB in Jet 4 data structures. Data is stored in “records” of variable length that may take up less or more than one page.

The page locking model works by locking the pages, instead of individual records, which though less resource-intensive also means that when a user locks one record, all other records on the same page are collaterally locked. As a result, no other user can access the collaterally locked records, even though no user is accessing them and there is no need for them to be locked. In Jet 4, the record locking model eliminates collateral locks, so that every record that is not in use is available.

There are two mechanisms that Microsoft uses for locking : pessimistic locking , and optimistic locking. With pessimistic locking, the record or page is locked immediately when the lock is requested, while with optimistic locking, the locking is delayed until the edited record is saved.

Conflicts are less likely to occur with optimistic locking, since the record is locked only for a short period of time. However, with optimistic locking one cannot be certain that the update will succeed because another user could lock the record first.

With pessimistic locking, the update is guaranteed to succeed once the lock is obtained. Other users must wait until the lock is released in order to make their changes. Lock conflicts, which either require the user to wait, or cause the request to fail usually after a timeout are more common with pessimistic locking. Jet supports transaction processing for database systems that have this capability.

A transaction is a series of operations performed on a database that must be done together — this is known as atomicity and is one of the ACID Atomicity, Consistency, Isolation, and Durability , concepts considered to be the key transaction processing features of a database management system.

For transaction processing to work until Jet 3. Until the transaction is committed, changes are made only in memory and not actually written to disk.

One of the main advantages is that transactions can be abandoned if a problem occurs during the transaction.

This is called rolling back the transaction, or just rollback, and it restores the state of the database records to precisely the state before the transaction began. Transactions also permit the state of the database to remain consistent if a system failure occurs in the middle of a sequence of updates required to be atomic. There is no chance that only some of the updates will end up written to the database; either all will succeed, or the changes will be discarded when the database system restarts.

With ODBC’s in-memory policy, transactions also allow for many updates to a record to occur entirely within memory, with only one expensive disk write at the end. Implicit transactions were supported in Jet 3. These are transactions that are started automatically after the last transaction was committed to the database. However, it was found that this had a negative performance impact in bit Windows Windows 95, Windows 98 , so in Jet 3. Jet enforces entity integrity and referential integrity.

Jet will by default prevent any change to a record that breaks referential integrity, but Jet databases can instead use propagation constraints cascading updates and cascading deletes to maintain referential integrity.

Jet also supports “business rules” also known as “constraints” , or rules that apply to any column to enforce what data might be placed into the table or column. Access to Jet databases is done on a per user-level. The user information is kept in a separate system database, and access is controlled on each object in the system for instance by table or by query.

Queries are the mechanisms that Jet uses to retrieve data from the database. The query is then compiled — this involves parsing the query involves syntax checking and determining the columns to query in the database table , then converted into an internal Jet query object format, which is then tokenized and organised into a tree like structure.

In Jet 3. The query is then executed and the results passed back to the application or user who requested the data. Jet passes the data retrieved for the query in a dynaset. This is a set of data that is dynamically linked back to the database.

Instead of having the query result stored in a temporary table, where the data cannot be updated directly by the user, the dynaset allows the user to view and update the data contained in the dynaset. Thus, if a university lecturer queries all students who received a distinction in their assignment and finds an error in that student’s record, they would only need to update the data in the dynaset, which would automatically update the student’s database record without the need for them to send a specific update query after storing the query results in a temporary table.

Jet originally started in as an underlying data access technology that came from a Microsoft internal database product development project, code named Cirrus. Cirrus was developed from a pre-release version of Visual Basic code and was used as the database engine of Microsoft Access.

Tony Goodhew, who worked for Microsoft at the time, says. For VB [Visual Basic] 3. Jet became more componentised when Access 2. A retrofit was provided that allowed Visual Basic 3. Jet 2. DLLs in Windows are “libraries” of common code that can be used by more than one application—by keeping code that more than one application uses under a common library which each of these applications can use independently code maintenance is reduced and the functionality of applications increases, with less development effort.

The Jet DLL determined what sort of database it was accessing, and how to perform what was requested of it. If the data source was an MDB file a Microsoft Access format then it would directly read and write the data to the file.

If the data source was external, then it would call on the correct ODBC driver to perform its request. Jet 3. Jet 4. Microsoft Access versions from Access to Access included an “Upsizing Wizard” which could ” upsize ” upgrade a Jet database to “an equivalent database on SQL Server with the same table structure, data, and many other attributes of the original database”.

Reports, queries, macros and security were not handled by this tool, meaning that some manual modifications might have been needed if the application was heavily reliant on these Jet features. It introduced a new default file format,. It also brought security changes and encryption improvements and enabled integration with Microsoft Windows SharePoint Services 3. The engine in Microsoft Access discontinued support for Access 1. The driver is not part of the Windows operating system, but is available as a redistributable.

The engine in Microsoft Access discontinued support for Access 95, Access 97 and xBase files, and it also discontinued support for replication. Version of Microsoft Access restored support for xBase files, [15] and Version introduced a Large Number data type. From a data access technology standpoint, Jet is considered a deprecated technology by Microsoft, [17] but Microsoft continues to support ACE as part of Microsoft Access.

Therefore, third party software support for JET databases is almost exclusively found on Windows. From Wikipedia, the free encyclopedia. Database engine built by Microsoft. This section does not cite any sources. Please help improve this section by adding citations to reliable sources.

Unsourced material may be challenged and removed. July Learn how and when to remove this template message. Microsoft Access 95 Excel Microsoft Project 4. Retrieved June 19, Archived from the original on August 8, Retrieved March 28, Retrieved January 2, Retrieved June 18, Microsoft Corporation. Retrieved August 26, Retrieved October 29, January Wikibooks has a book on the topic of: JET Database.

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Microsoft office access database engine 2007 free free –

In Office , Microsoft introduced the Document Inspector , an integral metadata removal tool that strips Word, Excel, and PowerPoint documents of information such as author name and comments and other “metadata”. In Microsoft Office , the Office Assistants were eliminated in favour of a new online help system.

One of its features is the extensive use of Super Tooltips, which explain in about one paragraph what each function performs. Some of them also use diagrams or pictures. These appear and disappear like normal tooltips, and replace normal tooltips in many areas. The Help content also directly integrates searching and viewing Office Online articles.

Microsoft Office includes features geared towards collaboration and data sharing. As such, Microsoft Office features server components for applications such as Excel, which work in conjunction with SharePoint Services , to provide a collaboration platform.

NET 2. Excel server exposes Excel Services, which allows any worksheet to be created, edited and maintained via web browsers. It features Excel Web Access , the client-side component which is used to render the worksheet on a browser, Excel Calculation Service which is the server side component which populates the worksheet with data and perform calculations, and Excel Web Services that extends Excel functionalities into individual web services.

SharePoint can also be used to host Word documents for collaborative editing , by sharing a document. SharePoint can also be used to hold PowerPoint slides in a Slide Library , from which the slides can be used as a formatting template.

It also notifies users of a slide automatically in case the source slide is modified. Also by using SharePoint, PowerPoint can manage shared review of presentations. Any SharePoint hosted document can be accessed from the application which created the document or from other applications such as a browser or Microsoft Office Outlook.

Microsoft Office also includes Groove , which brings collaborative features to a peer-to-peer paradigm. Groove can host documents, including presentations, workbooks and others, created in Microsoft Office application in a shared workspace, which can then be used in collaborative editing of documents. Groove can also be used in managing workspace sessions, including access control of the workspace.

To collaborate on one or more documents, a Workspace must be created, and then those who are to work on it must be invited. Any file shared on the workspace are automatically shared among all participants. The application also provides real-time messaging, including one-to-one as well as group messaging, and presence features, as well as monitoring workspace activities with alerts, which are raised when pre-defined set of activities are detected.

Groove also provides features for conflict resolution for conflicting edits. Schedules for a collaboration can also be decided by using a built-in shared calendar, which can also be used to keep track of the progress of a project. However, the calendar is not compatible with Microsoft Outlook. The Document Theme defines the colors, fonts and graphic effects for a document.

Almost everything that can be inserted into a document is automatically styled to match the overall document theme creating a consistent document design. The new Office Theme file format. Similar themes are also available for data reports in Access and Project or shapes in Visio. Quick Styles are galleries with a range of styles based on the current theme.

There are quick styles galleries for text, tables, charts, SmartArt, WordArt and more. Microsoft Office Outlook can also include an optional Business Contact Manager included on a separate installation disc in Office Small Business and above which allows management of business contacts and their sales and marketing activities.

Phone calls, e-mails, appointments, notes and other business metrics can be managed for each contact. It can also keep a track of billable time for each contact on the Outlook Calendar. Based on these data, a consolidated report view can be generated by Microsoft Office Outlook with Business Contact Manager. The data can be further analyzed using Microsoft Office Excel. This data can also be shared using SharePoint Services.

Microsoft Office SharePoint Server allows sharing and collaborative editing of Office documents. It allows central storage of documents and management of Office documents, throughout the enterprise. These documents can be accessed either by the applications which created them, Microsoft Office Outlook , or a web browser. Documents can also be managed through pre-defined policies that let users create and publish shared content, through a SharePoint site.

SharePoint Server allows searching of all Office documents which are being managed by it, centrally, thereby making data more accessible. It also provides access control for documents. Specialized server components can plug into the SharePoint Server to extend the functionality of the server, such as Excel Services exposing data analysis services for Excel services.

Data from other data sources can also be merged with Office data. SharePoint also lets users personalize the SharePoint sites, filtering content they are interested in. SharePoint documents can also be locally cached by clients for offline editing; the changes are later merged.

Microsoft Office Forms Server allows InfoPath forms to be accessed and filled out using any browser, including mobile phone browsers. Forms Server also supports using a database or other data source as the back-end for the form. Additionally, it allows centralized deployment and management of forms. Forms Server hosted forms also support data validation and conditional formatting, as does their InfoPath counterpart. It also supports advanced controls like Repeating section and Repeating table.

However, some InfoPath controls cannot be used if it must be hosted on a Forms server. Microsoft Office Groove Server is for centrally managing all deployments of Microsoft Office Groove in the enterprise.

It enables using Active Directory for Groove user accounts, and create Groove Domains , with individual policy settings. It allows Groove workspaces to be hosted at the server, and the files in the workspaces made available for collaborative editing via the Groove client.

It also includes the Groove Server Data Bridge component to allow communication between data stored at both Groove clients and servers and external applications. Microsoft Office Project Server allows one to centrally manage and coordinate projects. It allows budget and resource tracking, and activity plan management. The project data and reports can also be further analyzed using Cube Building Service.

The project management data can be accessed from a browser as well. Microsoft Office Project Portfolio Server allows creation of a project portfolio, including workflows, hosted centrally, so that the information is available throughout the enterprise, even from a browser. It also aids in centralized data aggregation regarding the project planning and execution, and in visualizing and analyzing the data to optimize the project plan.

It can also support multiple portfolios per project, to track different aspects of it. It also includes reporting tools to create consolidated reports out of the project data. Microsoft PerformancePoint Server allows users to monitor, analyze, and plan their business as well as drive alignment, accountability, and actionable insight across the entire organization.

It includes features for scorecards, dashboards, reporting, analytics, budgeting and forecasting, among others. Even though the ribbon can be hidden, PC World wrote that the new “ribbon” interface crowds the Office work area, especially for notebook users. As a result, users who were more familiar with the logic of the old menus would be somewhat frustrated with the new, more visually oriented ribbon.

The ribbon cannot be moved from the top to the side of the page, as floating toolbars could be. Some users with experience using previous versions of Microsoft Office have complained about having to find features in the ribbon. Others state that having learnt to use the new interface, it has improved the speed with which “professional-looking” documents can be created. Microsoft contractor Mike Gunderloy left Microsoft partially over his disagreement with the company’s “sweeping land grab ” including its attempt to patent the ribbon interface.

He says “Microsoft itself represents a grave threat to the future of software development through its increasing inclination to stifle competition through legal shenanigans. The new XML-based document file format in Microsoft Office is incompatible with previous versions of Microsoft Office unless an add-on is installed for the older version. PC World has stated that upgrading to Office presents dangers to certain data, such as templates, macros, and mail messages.

The new Word features for bibliographies only support a small number of fixed citation styles. Using XSLT, new styles can be added. Some extra styles, such as the standard Association for Computing Machinery publication format, are made freely available by third parties.

From Wikipedia, the free encyclopedia. Version of Microsoft Office. These four programs make up the Home and Student edition. Service Pack 3 Main article: Ribbon computing.

Main article: OpenDocument software. Main article: Microsoft Word. Main article: Microsoft Outlook. Main article: Microsoft Excel. Main article: Microsoft PowerPoint. Main article: Microsoft OneNote. Main article: Microsoft Access. Main article: Microsoft Publisher. Main article: Microsoft InfoPath. Main article: Microsoft Visio. Main article: Microsoft Project. Main article: Microsoft SharePoint Designer. Main article: Microsoft Office Forms Server. Main article: Microsoft Office Groove Server.

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May 19, Archived from the original on January 19, Retrieved May 22, Archived from the original on January 3, Retrieved May 23, Sun Microsystems. Retrieved January 27, Heise Online. July 4, Archived from the original on July 11, Retrieved July 6, This provider can be downloaded from Excel Workbook , “Excel This driver was first released with Office It is possible to use the Microsoft.

The driver is available in both 32 bit and 64 bit versions. Please Note! There are some reported problems with the “Microsoft Access Database Engine Redistributable” package that. One reason why you might be obliged to go for 64 bit Access is because your database has a SQL Server back end and tables in that back end have fields of the bigint data type. According to the following Microsoft blog: Microsoft Access Database Engine OLE DB Provider If you are in a scenario where you have both bit and bit processing being performed on the same server that needs to use the ACE data provider, from the Microsoft standpoint, it is recommended to have 2 different servers 1 to process bit mode and the other for bit mode.

Seperti tampilan di bawah. Sudah dicoba berkali-kali masih saja seperti itu. Jangan khawatir, punya solusinya. Delete or rename the “; registry value, which contains the path to the bit version of MSO. Now you can start a bit MS Office application.

The redistributable package exists in two flavors, as bit and bit installation. The version you would install depends on the application that will connect to the Office data files. SQL Server Compact 3. Install a bit access database engine. Uninstall bit Office If the Microsoft Access Driver lists and , then the correct drivers are installed. In this case, skip to Step 4. If the Microsoft Access Driver only lists , the necessary driver is not installed.

If bit Office is installed, the Access Database Engine must be installed. It may not be properly installed. Microsoft Word 64 bit download – X bit Download – xbit download – freeware, shareware and software downloads It has been designed Access including 95, 97, , XP , , , and If you want to install bit Microsoft Access Database Engine , you will first need to remove the bit installation of Office products.

After uninstalling the following product s , rerun setup in order to install bit version of Microsoft Access Database Engine Microsoft Office Professional Plus