Derived Channel

تقريبا كل للقوانين اللي عندنا ف المنهج ==> T = 1 / f ------------------------------------------------------------ Fs : Sampling Frequency (Number of samples per second) Fmax : Maximum Frequency q : Number of digital levels in a q-level quantizer (Quantization…

H(f)

779 viewsAbdelrahman Zaki, 07:10

Derived Channel

Photo

دي مسألة على القانون اللي اتبعت دلوقتي، هبعت واحدة كبيرة كانت لامة كام مطلوب

819 viewsAbdelrahman Zaki, 07:15

Derived Channel

1.07K viewsAbdelrahman Zaki, 08:30

Derived Channel

دي مسألة على القانون اللي اتبعت دلوقتي، هبعت واحدة كبيرة كانت لامة كام مطلوب

المسألة :)

904 viewsAbdelrahman Zaki, 08:40

Derived Channel

بسم الله اسئله علي جزء الشفوي ال 4 محاضرات

685 viewsMohamed K.Haweil, 17:19

Derived Channel

المحاضره السابعه

683 viewsMohamed K.Haweil, 17:19

Derived Channel

Structured Query Language or SQL, is a ............... that allows a high-level expression of queries.

Anonymous Quiz

327 voters683 viewsMohamed K.Haweil, 17:20

Derived Channel

...............is a useful theoretical language that serves to define more complex languages.

Anonymous Quiz

27%

Structured Query Language

73%

Relational algebra

311 voters645 viewsMohamed K.Haweil, 17:22

Derived Channel

Queries in relational algebra are performed using operators

Anonymous Quiz

92%

291 voters583 viewsMohamed K.Haweil, 17:24

Derived Channel

Relational algebra is divided into similar groups

Anonymous Quiz

49%

51%

287 voters541 viewsMohamed K.Haweil, 17:28

Derived Channel

The sequence of operations in a relation algebra is called relational algebra expression.

Anonymous Quiz

96%

281 voters543 viewsMohamed K.Haweil, 17:28

Derived Channel

SELECT (σ)

Anonymous Quiz

13%

Binary Relational Operations

87%

Unary Relational Operations

294 voters489 viewsMohamed K.Haweil, 17:33

Derived Channel

JOIN

Anonymous Quiz

88%

Binary Relational Operations

12%

Unary Relational Operations

292 voters479 viewsMohamed K.Haweil, 17:33

Derived Channel

Binary Relational Operations : RENAME (ρ)

Anonymous Quiz

23%

77%

285 voters472 viewsMohamed K.Haweil, 17:34

Derived Channel

CARTESIAN PRODUCT ( x )

Anonymous Quiz

Unary Relational Operations

31%

Binary Relational Operations

62%

Relational Algebra Operations

277 voters459 viewsMohamed K.Haweil, 17:35

Derived Channel

The relation resulting from the SELECT operation has the ........ attributes as R.

Anonymous Quiz

276 voters439 viewsMohamed K.Haweil, 17:39

Derived Channel

The symbol σ (sigma) is used to denote the project operator

Anonymous Quiz

20%

80%

276 voters432 viewsMohamed K.Haweil, 17:40

Derived Channel

The SELECT operator is unary; that is, it is applied to a single relation.

Anonymous Quiz

94%

273 voters430 viewsMohamed K.Haweil, 17:41

Derived Channel

The number of tuples in the resulting relation is always............. to the number of tuples in R

Anonymous Quiz

91%

less than or equal

more than or equal

265 voters433 viewsMohamed K.Haweil, 17:44

Derived Channel

a sequence of SELECTs can be applied in any order

Anonymous Quiz

27%

73%

266 voters428 viewsMohamed K.Haweil, 17:47

Derived Channel

The ............... operation, selects certain columns from the table and discards the other
columns.

Anonymous Quiz

260 voters426 viewsMohamed K.Haweil, 17:49

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