In a database, a group of fields that are all associated with and accessed using a single primary key is called a record.
What is database?
A database is a planned grouping of material that has been arranged and is often kept electronically inside a computer system. A database is frequently managed with a database management system (DBMS). The term "database system," which is frequently abbreviated to "database," refers to the combination of the data, the DBMS, and the applications which are connected to it.
To facilitate processing and data querying, the most popular types of databases currently in use typically model their data as rows and columns in a set of tables. The data may then be handled, updated, regulated, and structured with ease. For writing and querying data, most databases employ structured query language (SQL).
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Answer:
It depends entirely on what you want to achieve. If you're a Graphic Designer who hands over HTML and CSS to the development team, then there is little need to learn any programming languages, unless that is something you aspire to do. You are already enhancing your value by knowing HTML and CSS, as there are a lot of designers who simply hand over Photoshop files to the dev team - HTML and CSS is their problem!
JavaScript is essentially a 'front end' or 'client side' language. Your browser executes the JavaScript in your webpages on your computer. It can be used to modify HTML and styles on the fly, and also uses a method called AJAX to send and receive data from the server. It makes web pages more engaging, easier to use, and overall can vastly increase the end user experience. Due to fairly recent developments, JavaScript can now also be used as a back end or server side language.
Python, Ruby & PHP are all languages that run on the server. The server processes the code and sends the web pages to your browser, compare this to JavaScript, where the code is sent to your browser, and that code produces or modifies the HTML within your browser itself.
Answer:
Maybe if u put the disk back in, or restart it if it doesn't do anything hope this helped.
Explanation:
Maybe if u put the disk back in, or restart it if it doesn't do anything hope this helped.
Answer:
a. engranaje 1 → engranaje 2 → engranaje 3 → engranaje 4
z1 = 10 z2 = 20 z3 =10 z4 = 20
b. n2 = 600 rpm, n3 = 1200 rpm, n4 = 600 rpm
la relacion de transmision = 2
Explanation:
where z1 = 10, z2 = 20, z3 = 10, z4 = 20
and n1 = 1200 rpm
n2 = n1 * z1/z2 = (1200 * 10)/ 20 = 600 rpm
n3 = n2 * z2/z3 = (600 * 20)/ 10 = 1200 rpm
n4 = n3 * z3/z4 = (1200 * 10)/ 20 = 600 rpm
la relacion de transmision = z2/z1 * z3/z2 * z4/z3
= 20/10 * 10/20 * 20/10 = 2 * 0.5 * 2 = 2
Denial of Service or Distributed Denial of Service.
