Johan is an electrician. He has to fix wiring for which he has a 300 cm ladder that he leans up against a wall. The safety sticker on side of ladder shows that bottom must be placed between 70 m and 110cm away from wall
1) What is minimum distance up wall that ladder can reach?
2) What is the maximum distance up the wall that the ladder can reach?
3) As Ladder forms a right-angle triangle with wall and If the length of ladder is 6m then what should be the other sides of triangle to form a Pythagorean triplet.
Answers
1. In computing, a database is an organized collection of data stored and accessed electronically from a computer system. Where databases are more complex they are often developed using formal design and modeling techniques.
2. An SQL select statement and its result
The database management system (DBMS) is the software that interacts with end users, applications, and the database itself to capture and analyze the data. The DBMS software additionally encompasses the core facilities provided to administer the database. The sum total of the database, the DBMS and the associated applications can be referred to as a "database system". Often the term "database" is also used to loosely refer to any of the DBMS, the database system or an application associated with the database.
3. Computer scientists may classify database-management systems according to the database models that they support. Relational databases became dominant in the 1980s. These model data as rows and columns in a series of tables, and the vast majority use SQL for writing and querying data. In the 2000s, non-relational databases became popular, referred to as NoSQL because they use different query languages.
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