Whether it is to solve their own problems or others to help me solve, I have summed it up to write down the lessons learned, this will be very useful in the future.
This is a previous SQL statement each query will be used for approximately 8S clock:
Select COUNT (1) as "Count"From T_ims_calllog lINNER JOIN T_tms_user UOn L.deviceno = u.user_idLeft JOIN T_tms_customer_data COn L.calleeno = C.mobilewhere flag = 1and callidnum =-1And Recordpath is not
. Judging R decomposition into Ρ={r1, R2, R3, R4, R5} non-destructive join decomposition? Solution: Such a problem to be solved by drawing a table, first, the original table:
A
B
C
D
E
AD
A1
B12
B13
A4
B15
Bc
B21
A2
A3
B24
B25
Be
B31
A2
B33
B34
A5
Cde
B41
B42
A3
1. Conditional flag bit for program status register
The B31 bit value of the result of the N operation. For signed twos complement, the result is negative when n=1, the result is positive or 0 o'clock n=0;
The result of the Z command is 0 o'clock Z=1, otherwise z=0;
C uses addition operations (including CMN directives), B31 bits produce c=1 when rounding, otherwise c=0. With subtraction operations (includin
" (software Designer 2002 morning test paper)Set the relationship mode R to R (h,i,j,k,l), a function dependency set on R is F={h→j,j→k,i→j,jl→h}, decomposition (38)is a non-destructive connection.Alternative answers:A. P={hk,hi,ij,jkl,hl} B. P={hil,ikl,ijl} C. P={hj,ik,hl} D. P={hi,jk,hl}Analysis of test questions: Based on the above method, we list the initial table of option B (decomposed into three relational patterns R1 (HIL), R2 (IKL), R3 (IJL)) as shown in Table 3: Table 3, option B, in
Topic link A. Currency System in GeraldionAt 1 o'clock, all numbers greater than or equal to 1 can be made up of 1. No 1 o'clock, the smallest unfortunate number is 1.1#include 2#include 3#include 4 using namespacestd;5 voidsolve () {6 intn,x;7scanf"%d",n);8 intFlag =0;9 for(inti =1; i){Tenscanf"%d",x); One if(x = =1) flag =1; A } - if(flag) printf ("-1\n"); - Elseprintf"1\n"); the } - intMain () - { - solve (); + return 0; -}Topic Link: B. Gerald is into Art
model.Cases:Relationship R (u,f), u={s#,sd,mn},f={s#→sd,sd→mn}1. Decomposition of R: Ρ1={r1 (s#), R2 (SD), R3 (MN)}A problem exists:A, the original "function dependency relationship does not exist".B, R1XR2XR3 Cartesian product, the tuple increased, "No lossless connection."2. Another decomposition of R: Ρ2={r1 (S#,SD), R2 (S#,MN)Ρ2 decomposition of R is recoverable, "with non-destructive connectivity"Problematic: sd→mn dependency loss, "no function dependency retention"3. Decomposition of R: Ρ
Okay. Continue with the CSS3 test. Let's take a look at the responsive three-dimensional effect implemented by text-shadow.
Click here for online research and click here to download the favorite stamp.
Principle Analysis
1. Use the googlefont font. Three fonts are used in this effect.
2. Use text-shadow to implement stereoscopic characters
3. Responsive Layout
Steps
Html
Css
body { font-family: 'Bad Script', cursive; background: #abdc28; transition:all .
] [2];Res-> W = x * m-> matrix [0] [3] + y * m-> matrix [1] [3] + z * m-> matrix [2] [3]+ M-> matrix [3] [3];}
It can be seen that, as described above, "the OpenGL column vector is multiplied by each column of the Matrix, and it still represents the multiplication of the linear algebra row vector and each row of the matrix"Let's take a look at the OpenGL Matrix Multiplication. "Use each column of A to multiply each row of B ".
/*** Compute r = a * B, where R can equal B.*/Void fastcall _ glmultm
{ width: 190px; height: 240px; margin: 2% auto; background: url (' http://treehouse-code-samples.s3.amazonaws.com/CSS-DD/codepen/blog/ Monster.png ') left center; animation: play. 8s Steps (Ten) infinite;} { 100% {background-position: -1900px;} }There is a little-known timing feature in CSS animation that allows us to break an animation into segments-or steps-instead of running it as a continuous animation from start to finish. Since we a
; animation:fade-in 4s ease 4s 1; -webkit-animation:fade-in 4s ease 4s 1; -moz-animation:fade-in 4s ease 4s 1; -o-animation:fade-in 4s ease 4s 1; -ms-animation:fade-in 4s ease 4s 1; /* Specifies that the last state of the animation is the end state */animation-fill-mode:forwards; -webkit-animation-fill-mode:forwards; -o-animation-fill-mode:forwards; -ms-animation-fill-mode:forwards; -moz-animation-fill-mode:forwards; }.four-words{opacity:0; an
remote systems
Logfile= "Diskusage.log"
if [[N $]]
Then
Logfile=$1
If
if [!-e $logfile]
Then
printf "%-8s%-14s%-9s%-8s%-6s%-6s%-6s%s\n" "Date" "IP Address" "Device" "Capacity" "Used" "Free" "Percent" "Status" > $logfile
Fi
ip_list= "127.0.0.1 0.0.0.0"
# provide a list of remote host IP addresses
(
For IP in $IP _list
Todo
SSH slynux@ $ip ' df-h ' | grep ^/dev/>/TMP/$$.DF
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