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Microsoft Access

Microsoft Access is a database management system. Part of the Microsoft Office suite, Access can be used to edit data stored in various database formats, such as SQL (multiple varieties), Oracle, Excel, XML, etc. Questions about this software and how to use it belong here.

1,050 Questions

How do you add all fields from a table to the design grid in the Query Design view in one step?

At the top of the field list in the table that you see in the top half of the query design, there is a star. This represents all fields in the table. Double clicking it will add all fields. However, doing this does not actually show all the fields individually in the Design grid. You will see the name of the table followed by a dot and a star in the first column. Running the query will display all the fields. If you want to individually see all the fields, you can add them in a different way. Click on the first field in the list and then pressing the Shift key, click on the last field. Now all of them will be selected. Then just drag them down to the grid and each field will automatically be put into its own column.

Why are relationships important in Microsoft access?

A Relational Database is a Database in which the data it contains is stored in separate Tables, with these tables related to each other. These Tables each hold information on logical groups of Data. For example a company's business data may be stored in different independent but inter-related Tables. They may have a list of Products and a list of Suppliers for those Products. The company would want to know which company supplies each product. For each supplier they would want to know their Name, Address, Contact Details etc. All the data could be put in one table.

However if one supplier supplies 100 different products and all their details are stored for each product this will mean a lot of repeated data and make the table quite large. Also, if any of the suppliers details change, this amendment will have to be made for each product's record. This obviously means a lot more work. There is also the possibility that this change may not be made in every record that requires it and inconsistencies will result in the database. The database may have different addresses or phone numbers stored for the one supplier. The solution is to have one table which stores all the product details and another table that stores the supplier details. In order to make sure that each product is still associated with a supplier a Relationship is set up between the two tables. This is done by having one field common to both Tables. Both fields must be of the same type and size, though its name can be different.

Each Supplier's full details now only appear once in the database, in the Suppliers Table, regardless of the amount of products they supply. Each Product is related to a particular supplier by having the relevant Suppliers Code included in the Products Table. This stops us having to store all the details of the Supplier for each Product as when all the data was being stored in the same table.

As one supplier can have many products and as the supplier appears once in the database, this is an example of a one to many relationship. There are also what are called one to one relationships, where each item is related to only one other and there are many to many relationships, where many things can be related to many others. An example is a music collection where you have many CDs and there are many songs. Each CD has many songs and each song could be on more than one CD.

What are examples of MS Access using database?

I have been using the Open Office database from Novel, it is free and handles much more than MS Access. To me the major advantage is that it also reads and writes just about every data format around - even many of the Microsoft Office formats no longer supported my MS Office 2007. I have a lot of old data (try Word Star 1985), Open Office reads it with no problem!

What is the purpose of a form in Microsoft access?

Forms allow you to display data in a more presentable form than a datasheet can. It can allow you to see all the fields at once, or just some of the fields. It can also allow you to generate other data from the existing data, like showing a calculation from figures on the form. Forms allow more functionality by having controls on them, such as buttons. They can link into queries. They can set up subforms for presenting data in relationships. There are many other things they can do, so they are very useful for databases.

What is a form view in access?

Access forms are much like paper forms; you can use them to enter, edit, or display data. They are based on tables. When using a form, you can choose the format, the arrangement, and which fields you want to display. The "form view" tells access to show you the form created for you to do that above tasks

What is the difference between iterative queries and recursive queries of dns?

Recursive queries When a client system sends a recursive query to a local name server, that local name server must return the IP address for the friendly name entered, indicate that it can't find an address, or return an error saying that the requested address does not exist. Name servers do not refer the client system requesting a recursive query to other DNS servers. When answering recursive queries, the originating client does not receive address information directly from any DNS server other than the local name server. Typically, the local name server will first check DNS data from its own boot file, cache, database, or reverse lookup file. If the server is unsuccessful in obtaining the answer from those local sources, it may contact other DNS servers for assistance using iterative queries and then pass the information it receives back to the client that originated the name resolution request. Iterative queries In iterative queries, name servers return the best information they have. Although a DNS server may not know the IP address for a given friendly name, it might know the IP address of another name server likely to have the IP address being sought, so it sends that information back. The response to an iterative query can be likened to a DNS server saying, "I don't have the IP address you seek, but the name server at 10.1.2.3 can tell you." The process is straightforward. Here's one example in which a local name server uses iterative queries to resolve an address for a client: The local name server receives a name resolution request from a client system for a friendly name (such as www.techrepublic.com). The local name server checks its records. If it finds the address, it returns it to the client. If no address is found, the local name server proceeds to the next step. The local name server sends an iterative request to the root (the "." in .com) name server. The root name server provides the local name server with the address for the top-level domain (.com, .net, etc.) server. The local name server sends an iterative query to the top-level domain server. The top-level domain server replies with the IP address of the name server that manages the friendly name's domain (such as techrepublic.com). The local name server sends an iterative request to the friendly name's domain name server. The friendly name's domain name server provides the IP address for the friendly name (www.techrepublic.com) being sought. The local name server passes that IP address to the client. It seems complicated, but the process completes in a matter of moments. Or, if an address isn't found, a 404 error message is returned to the client.

What is macrosoft access?

It's a database application which allows you to store, organise and retrieve information in a structured way.

What is the data type for a telephone number field?

It is a text type. There are a number of reasons why you do not use a number type. Most phone numbers in their full form start with a zero. If entered into a number field, the zero would be dropped. Number fields do not allow spaces or other characters, such as hyphens or brackets, that are often used when entering phone numbers. Although they are numbers, you never do calculations on phone numbers, like adding or multiplying or getting averages. So no numerical operations are carried out.

Functions of form in ms-access?

FORMS

An Access database object on which you place controls for taking actions or for entering, displaying, and editing data in fields.

Forms provide the interface for data entry to the database. End-users are usually unaware of MS Access tables' structure and inter-table relationships; they can use the forms to perform data entry operations to the background tables.

How do you make a query on Microsoft access?

Open a new query. Bring in the table you want to append records from and add in the fields you want to use. Click on the Query menu and pick Append Query. Choose the table that you want to append to from the drop down list. In the Append To line of the query design grid you can choose the corresponding fields you want to append to. When you have them chosen and applied any criteria, then you can run the query.

Before changing to an Append query it is often best to first set it up as a Select query so that you can see what records and fields will be appended when it is run. You can be more certain then that the correct records will be added.

In access each row in a table contains a what?

In Access a table has records which are the rows and fields which are columns. To retrieve specific data in a database you have to use a query.

Which command is used to create a table?

CREATE TABLE command is used to create table. Syntax of creating a TABLE is: CREATE TABLE ( [] []); ex: create table emp (ecode integer, ename char(20));

Why do you want to do a course in access?

I want to gain good experience and training to support my work search in the future.

What are the uses of Microsoft Database?

A Microsoft Windows server allows you to store, host and protect ones networking systems. One may be able to keep their information, documents and websites secure in the event of computer system failures.

Are there examples of expressions in Microsoft Access?

They are like formulas that can be built into Access, often on a form or a query in order to calculate something. In general in databases, anything that can be calculated from other data should not be in a field. For example, if you have the date of birth stored in a field then you should never have the age stored. The age can always be calculated from the date of birth and be accurate at all times. An age changes every year, but the date of birth never does. You would do that calculation by using an expression. If you have the amount of hours worked and the rate of pay, then you can calculate the actual wage at any time, so that does not need to be stored either, and it can be calculated through an expression. So expressions are very useful for doing things in Access.

What is a crosstab query?

a query that calculates a statistic for data that is grouped by two diffrent type of information

What data type can store up to 255 characters in Access?

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Which is better a spreadsheet or a database?

A database is the storing of information (such as on your hard drive or disk), while a spreadsheet is used for accounting, or keeping track of expenditures or other items or projects with a numerical value. A spreadsheet can also be stored on your computer or on hard copy (printed on paper).

1.A spreadsheet is an application for tabulating data while a database is where data is stored so that it can be retrieved by users

2.The amount of data that is usually stored in a database is way more than what is contained in a spreadsheet

3.A spreadsheet is edited directly by people while a database is accessed by applications that enter and modify data

4.A spreadsheet is usually used for presentations and paperworks while databases are commonly used in cases where a lot of data needs to stored.

Read more: Difference Between Spreadsheet and Database | Difference Between in the related link below.

How do you select a row or record on a datasheet?

Click on the header at the start of a row and it will select the entire record.

Why should all in Ms Access have a primary key?

In any database there should always be a way of uniquely identifying each record. That is the main purpose of a primary key. In the real world we have things like reference numbers, membership numbers, registration numbers, serial numbers and so on. Using these we can uniquely identify something as no other object will have the same number. So if two people who have the same name work in a company, they would have different employee numbers and so they can be identified. Without something to uniquely identify data, there is confusion and it can cause major problems in a database.