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Database Programming
Databases are collections of tables that maintain and display information, often collaboratively; this information can be used for interaction with an application or gaining general knowledge. Questions about database engines and modifying or using them belong in this category.
8,803 Questions
What is the general format of an SQL query?
In general, SQL "statements" have a Select "clause," a From "clause," and a Where "clause."
What is the structure of logical argument?
An argument is a connected series of statements to establish a definite proposition.
3 stages to an argument: Premises, inference, and conclusion.
Draw a B-tree of order 3 for the following sequence of keys 2 4 9 8 7 6 3 1 5 10?
2 4 6 7 8 9
split to become
6
/ \
2 3 4 7 8 9
6
/ \
1 2 3 4 7 8 9
6
/ \
1 2 3 4 5 7 8 9
6
/ \
1 2 3 4 5 7 8 9 10
Ipv4 is connectionless or connection oriented?
It's neither. IP is a transport layer protocol. Connection/Connectionless imply the network layer.
Look up the OSI model.
Actually you are correct, but it doesn't just go that far. The definition of connectionless is the ability to send and receive packets without already establishing connectivity between two or more specific entities. IPv4 is connectionless, meaning if I send information via IPv4 I can just send the packets without having to do much more than click "return".
Hope this helps.
The procedure of DFT can be found by following this website: gov.uk/government/organisations/department-for-transport/about/complaints-procedure.
What basic clause in an SQL statement is used to retrieve rows and columns from tables?
The SELECT clause is used to retrieve rows and columns from tables.
Ex: Select * from employee
How do you you create table in M.S. Access?
You can create a table in Microsoft Access in two ways.
Creating a table using the Access interface
In Microsoft Access, go to the Create tab at the top of the screen. You will see the "ribbon" change. ( The ribbon is the horizontal bar with all the buttons at the top of the screen). On the ribbon you now have a Table button. If you press this a new table is created. Your new table will appear in the list on the left of your screen and have a default name of "Table1". You can change this name when you save your new table.
The next step would be to add fields to your table. This is best done in design view. In order to access design view, right click the name of your table in the list on the left and choose Design view from the menu that appears.
In design view, you can add fields and decide what data type (text, number, date, etc) they should have. Also, you can set field properties like input masks and validation rules at the bottom of the screen.
Creating a table using SQL
You can also create a table using the Structured Query Language (SQL)., but it is more complicated. SQL is a language that was developed to interact with databases.
The following example script uses the CREATE statement to create a contacts table.
CREATE TABLE contacts
(
contact_id int,
firestname varchar(255),
lastname varchar(255),
address varchar(255),
city varchar(255),
CONSTRAINT pk_contactid PRIMARY KEY (contact_id)
)
In order to run this query and create the table, once again go to the create tab.
- On the ribbon of the create tab, choose Query Design.
- The window show table will be shown. Close this window.
- Now, on the left most part of the ribbon, click the SQL View button and select SQL View from the options that appear.
- Now the main window changes into a editable area where you can copy your query into. Copy/paste the query I typed above into this area.
- Now, in order to save the query press the key combination CTRL + S. This will bring up the Save as dialog box asking you to name your table. Name your table and press OK in the Save as dialog box.
- Now, your query will appear in the list on the left side of the screen. Select it and press the Run button (the one with the large, red exlamation mark) on the ribbon.
- Now your table will be created and will appear in the list on the left.
When is the system proposal presented to the approval committee?
report verbal presenation or walkthrough
What service should I use for NPI Lookup or NPI Registry database?
Origonal answer:
NPIDB.orgI would recommend the NPI Lookup tool on NPIDB.org at http://npidb.org/npi/ simply because that site is easier to use and not cluttered with various other tools that I don't need.
HIPAASpace.com - NPI Lookup toolThat's a hot topic in our hospital since May 23 - we're getting tons of phone calls and faxes asking for NPI of our providers. Glad you asked this question. So far there are no bullet proof solution, at least I was not able to find any. However, there are some good resources allowing NPI Lookup, I personally like HIPAASpace.com - their tool for NPI Lookup is: http://www.hipaaspace.com/Medical_Billing/Coding/National_Provider_Identifier/NPI_Number_Lookup.aspx. Hope it helps.What is the Difference between attribute and property?
Here's my opinion:
Not much really; from a programming perspective I would say the following ...
Property: for example the length of a String i.e. String.Length Generally you do not set it
Attribute: for example the Value of a String i.e. String str = "a string" Generally you would set it
>>>>>>>>>>>>>>>
- attributes: are _given_ by the human to an object
- properties: are _natural_ aspects of an object.
amanpreet
The geographical area covered by a wan is called?
It depends on the scope of the WAN. The Internet is a WAN, which is scoped to the entire planet. However, a WAN might be scoped to a company's offices throughout a town, a county, a country, a continent or indeed the entire planet.
What are the different types of discourse?
There are four major types of discourse. These major types of discourse include argumentation, narration, description, as well as an exposition.
Normalization form in details in points and examples?
Normalization is a process to reduce redundancy.
By using normalization we can easily remove duplicate entries..
What is the Standard abbreviation for permission?
The standard abbreviation for permission is perms. All letters are lowercase so as not to be confused with other abbreviations or acronyms.
