Hello,

Is it possible build a real time machine?

Helga [31]

Answer:

Travelling in time might sound like a flight of fancy, but some physicists think it might really be possible. BBC Horizon looked at some of the most promising ideas for turning this staple of science fiction into reality.

Explanation:

7 0

3 years ago

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When installing a Windows 10 an already installed Windows 7 what happen

astra-53 [7]

Answer:

are u updating it? or u r rooting it?

4 0

3 years ago

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What programming language supports relational databases?

WINSTONCH [101]

A programming language that supports relational databases is SQL (Structured Query Language)

Structured Query Language (SQL), is the principal method for communicating with Relational Databases.

A relational database is a group of data elements that are linked together by predefined connections. These elements are laid up in the form of a series of tables containing columns and rows.

Tables are utilized for storing data about the items that will be displayed in the database.
A column in a database contains a specific type of data, whereas a field records the actual value of an attribute.
The table's rows indicate a collection of linked values for a single item or entity.

Each entry in a database can be assigned a unique identity known as a primary key, and rows from other tables can be linked together via foreign keys. This data may be accessible in a variety of ways without having to reorganize the database tables itself.

Learn more about Relational Databases here:

brainly.com/question/8457395?referrer=searchResults

5 0

2 years ago

A blood bank maintains two tables - DONOR, with information about people who are willing to donate blood and ACCEPTOR, with info

Kipish [7]

Answer:

The sql query is given below.

Since we need to count of males and females for a particular blood group, we put xxx for the blood group.

SELECT COUNT(SELECT DID FROM DONOR WHERE GENDER LIKE "M%") as Male_Donors,

COUNT(SELECT DID FROM DONOR WHERE GENDER LIKE "F%") as Female_Donors

FROM DONOR

WHERE BG = xxx;

Explanation:

The clauses in the query are as follows.

1. SELECT: all the columns required in the output are put in this clause.

2. FROM JOIN ON: the table(s) from which the above columns are taken are put in this clause.

3. WHERE: any condition required to filter the output is put in this clause.

The query is explained below.

1. Find the number of male donors. Number of anything can be found using COUNT() function. A query is required since gender is included in deciding the type of donor.

2. The query is defined to find number of male donors as follows.

COUNT( SELECT DID FROM DONOR WHERE GENDER LIKE "M%"; )

3. In the previous query, LIKE operator is used since it is not defined what value is stored for male donors.

4. Similarly, the query to find the number of female donors is formed.

COUNT( SELECT DID FROM DONOR WHERE GENDER LIKE "F%"; )

5. Next, the final query is formed as follows.

SELECT: both COUNT() functions will come here.

FROM: table name

WHERE: specific blood group will be put here

GROUP BY: this clause is optional and is not used in this query.

HAVING: this clause is optional and is not used in this query.

6. The query after putting all clauses is shown below.

SELECT COUNT(SELECT DID FROM DONOR WHERE GENDER LIKE "M%"),

COUNT(SELECT DID FROM DONOR WHERE GENDER LIKE "F%")

FROM DONOR

WHERE BG = xxx;

7. Alias is used in the above query for each column to get the final query.

SELECT COUNT(SELECT DID FROM DONOR WHERE GENDER LIKE "M%") as Male_Donors, COUNT(SELECT DID FROM DONOR WHERE GENDER LIKE "F%") as Female_Donors

FROM DONOR

WHERE BG = xxx;

7 0

3 years ago

Why is stranded rather than solid cable used for patch cables? Why is it critical not to score the jacket too deeply when stripp

Serggg [28]

Answer:

The definition of the issues is listed throughout the section down.

Explanation:

Stranded cables are somewhat more compact and can be mounted quickly. Strong cables become rigid in design, and they are not versatile for installation. In comparison with solid connectors, amplification is indeed high.
Unless the innermost layer including its wire is broken as we attempt to connect the cable, it will not function. So, whenever stripping the cables through the walls, it's indeed important not to rank the jack too profoundly.
It would be quick to untwist the cable and then will ensure that perhaps the connection is appropriate for the most widely encountered rj-45 connection whenever the wiring of 0.5 inches becomes coupled up.
If we don't keep the right pin colors in order, the relation won't work. Afterward, when another connexon is broken due to many complications, it would be impossible to figure out the contacts unless the pins coloring are not always in sequence.
The connection pairs can be cut off through 0.5 inches within about therefore the gap within the connector is narrower and the wire would not be correctly attached if we break the cable further. The link is lost and the cable does not run properly.
It is necessary to ensure that perhaps the wires are forced to the end of the platform since the connexon will indeed be broken as well as the connector would not operate unless the wires aren't moved. The wires will fall out of another socket as well.
Before even being incorporated into another crimping unit, it is good to carefully check the connection sequence to ensure that perhaps the wires are to the end since it is impossible to verify the sequence until the wires are attached to something like the connector. Unless the connections are not always in alignment, the link will also not be provided and indeed the wire would not operate correctly, even if the link is provided. Such wires can also be presented to use load barriers, and that it's the simplest operation.
The Durability Tester has been used to determine the hardness between two stages, whereas the connection efficiency is tested using the qualification tester.

8 0

3 years ago