the awesome and the not so much

... scale RDBMS: The Awesome and the Not- So- Much There are many reasons that the relational database has become so overwhelmingly popular over the last four decades An important one is the Structured ... horse, the car, the plane They each build on prior art, they each attempt to solve certain problems, and so they’re each good at certain things and less good at others They each coexist, even now So ... computers, and the software they’re running must then be capable of operating in a cluster and have some facility for recognizing node failures and failing over requests to another part of the system...

Ngày tải lên: 21/02/2014, 19:20

... • the amplitude is the height of the wave the distance from node to crest or node to trough the amplitude is a measure of how intense the light is – the larger the amplitude, the brighter the ... is proportional to the amplitude and frequency of the waves the larger the wave amplitude, the more force it has the more frequently the waves strike, the more total force there is Tro, Chemistry: ... Approach 10 The Relationship Between Wavelength and Frequency • for waves traveling at the same speed, the shorter the wavelength, the more frequently they pass • this means that the wavelength and frequency...

Ngày tải lên: 28/11/2013, 01:11

... included in the regression The standard deviation of the residuals is essentially equal to the standard error of the regression - the difference being due to the fact that the formula for the standard ... RMt , and the estimated standard deviation of the residuals, σ ε From the table, R = 0.190 so the market index explains only 19% of the variability of IBM and 81% of the variability is not explained ... 99 stocks and let R99 denote the return on this portfolio and σ denote the variance Now consider adding one 99 stock, say IBM, to the portfolio Let RIBM and σ IBM denote the return and variance...

Ngày tải lên: 17/12/2013, 15:17

... Spread: Range and Variance Range is the difference between the max and The variance or standard deviation is the most common measure of the spread of a set of points However, this is also sensitive ... represented as the position of the points or the characteristics of the points, e.g., color, size, and shape – If position is used, then the relationships of points, i.e., whether they form groups ... value is the percentage of time the value occurs in the data set – For example, given the attribute ‘gender’ and a representative population of people, the gender ‘female’ occurs about 50% of the...

Ngày tải lên: 15/03/2014, 09:20

... express the two types of casts, in Delphi for NET they are both converted into the same code (the as cast): anotherObject := TAnotherClass (anObject); // direct anotherObject := anObject as TAnotherClass; ... to an integer (holding the address of the memory location of the object, not the object's data), and the like These are unsuggested and unsafe practices, but they are somewhat frequent in Delphi ... allocation, their data blocks participate in the memory management (including the garbage collector), and they must eventually be disposed Records just sit there on their own, and cost much less...

Ngày tải lên: 16/04/2014, 11:14

... the commands described in section Operators on ADT’s are defined by specifying the the number and type of operands, the return type, the precedence and associativity of the operator, and the procedure ... in another catalog The attributes in IPL represent the relation, an IPL entry for the relation, and the sequence number for that entry in the IPL of the relation With these two catalogs, the ... utility commands that only affect the performance of the system (e.g., define index and modify), and other miscellaneous utility commands (e.g., destroy and copy) The next section describes the type...

Ngày tải lên: 28/04/2014, 13:32

... mathematical concept based on the ideas of sets  The strength of the relational approach to data management comes from the formal foundation provided by the theory of relations  We review the ... Statement of the constraint The value in the foreign key column (or columns) FK of the the referencing relation R1 can be either: (1) a value of an existing primary key value of the corresponding ... can be taken: – Cancel the operation that causes the violation (REJECT option) – Perform the operation but inform the user of the violation – Trigger additional updates so the violation is corrected...

Ngày tải lên: 12/05/2014, 11:55

... case is the ratio of the motion of the pendulum bob to the motion of the top support Since H is complex, it gives the ratio of the amplitudes of the motions and their relative phase For the simple ... Again, use the ’t’ command to make sure the motions are sinusoidal Above the resonance frequency of the IP, you will need to turn up the drive amplitude so the signal-to-noise in the measurements ... value may fit better The real IP is not exactly the same as depicted in theory, so there will be some systematic discrepancies Your data may also deviate significantly from theory as the calculated...

Ngày tải lên: 28/06/2014, 06:20

... dce 2009 Chapter The Processor Adapted from Computer Organization and Design, 4th Edition, Patterson & Hennessy, © 2008 11/17/2009 ©2009, CE Department dce 2009 The Five classic Components ... Read memory and update register • Store: Write register value to memory ©2009, CE Department dce 2009 Branch Instructions • Read register operands • Compare operands – Use ALU, subtract and check ... Datapath – Elements that process data and addresses in the CPU • Registers, ALUs, mux’s, memories, … mux s, • We will build a MIPS datapath incrementally – Refining the overview design ©2009, CE Department...

Ngày tải lên: 03/07/2014, 11:20

... relates the integral of the divergence of the field over some closed volume to the flux through the surface that bounds the voume The divergence measures the sources and sinks within the volume If nothing ... of the potential and the assumption that magnetic monopoles, if they exist at all, are not relevant for geomagnetism (so that the l = component is zero) • The direction and the strength of the ... 3.16: Note that on VGP diagrams one plots the VGP position relative to a fixed landmass but in reality the poles are the same and the landmass moves! The observation that the pole paths not agree...

Ngày tải lên: 04/12/2015, 00:25

... right and wrong and they granted them forgiveness for sins against God and the Christian faith -On the other hand, the Protestants insisted that all individual must stand alone before God If they ... be the man seen naked and making love to a woman in the video and photos In the United Kingdom: it is not same as the United State when the main clergy is the priest -The United States with the ... competitions with others when they work - People always believe Buddhism and pray for their luck, wealth and health from Buddhism Sometimes, they believe the luck the Buddhism brought for them rather than...

Ngày tải lên: 14/12/2015, 18:34

... Microsoft Access is the data source, you need OledbConnection The Connection class takes the connection string and offers the Open() and Close() methods to manage the connection with the data source ... provider In the case of SQL Server, we need SqlCommand, and for Microsoft Access, we need OledbCommand Among other tasks, the main jobs of Command are to take the SQL query from the client and pass ... SQL query The second line specifies the connection to the command, and the third line is the actual SQL query statement instructing the database to send all columns and all rows from the table...

Ngày tải lên: 05/10/2013, 08:48

... down the weeds can make They did not stop there, though They trimmed all of the 54 The Value-Play Strategy hedges, edged along the sidewalks, and cleaned up the grounds I also had the landscaping ... of the two partners and later met with the second one They said they wanted to buy the property At the time, I was still thinking about just keeping the property and refinancing it, so I was not ... begin working on the Monday following the closing The tenants were notified that the property was under new management and that they would begin seeing some much- needed improvements The flurry of...

Ngày tải lên: 07/11/2013, 14:15

... The UML and Data Modeling Introduction The power of the Unified Modeling Language is not limited to object oriented software development More and more, the UML is being applied to other ... Figure The UML and Data Modeling The diagram representation uses the Index stereotype in front of the operation (Figure 10) Figure 10 The index constraint specifies the columns included and optionally ... tables, where the child table cannot exist without the parent table All of the primary keys of the parent table (Person, in this example) become both primary and foreign key columns in the child...

Ngày tải lên: 10/12/2013, 15:15

... them? I: Well, we handle news releases and arrange feature length editorial coverage in the same way as we for our other clients However, because the financial press is often distinct from other ... work on Macs, and may need you to some basic design work from time to time A: What sort of documents does your design studio produce? I: It really varies They have just put together a market ... specific ways A: So things like annual reports and quarterly results would be the kind of material the team communicates I suppose I’m very impressed by what you offer here I: There is more to...

Ngày tải lên: 13/12/2013, 04:15

... tiptoe along the passage They made not the least noise until they reached the door Then Sara suddenly turned the handle, and threw it wide open Its opening revealed the room quite neat and quiet, ... Ermengarde the most was her fancy about the dolls who walked and talked, and who could anything they chose when the human beings were out of the room, but who must keep their powers a secret and so flew ... familiar with these words, but apparently knew any number of others, and could mix them up with verbs as if they were mere trifles She stared so hard and bit the ribbon on her pigtail so fast that...

Ngày tải lên: 14/12/2013, 21:15

... Spaniards and A-rabs, but I wanted to see the camels and elephants, so I was on hand next day, Saturday, in the ambuscade; and when we got the word we rushed out of the woods and down the hill But there ... di'monds, and I told Tom Sawyer so He said there was loads of them there, anyway; and he said there was A-rabs there, too, and elephants and things I said, why couldn't we see them, then? He said ... they rub an old tin lamp or an iron ring, and then the genies come tearing in, with the thunder and lightning a-ripping around and the smoke arolling, and everything they're told to they up and...

Ngày tải lên: 15/12/2013, 09:15

... (a bosom friend) General of the other These two great commanders did not condescend to fight in person that being better suited to the still smaller fry but sat together on an eminence and ... she brought song and sunshine in at the other He wandered far from the accustomed haunts of -42- boys, and sought desolate places that were in harmony with his spirit A log raft in the river invited ... the next disagreement agreed upon, and the day for the necessary battle appointed; after which the armies fell into line and marched away, and Tom turned homeward alone As he was passing by the...

Ngày tải lên: 24/12/2013, 14:16

... we'll be discussing further in Chapter 3.2.1 DTD Cannot Be Found The telltale sign that SP could not find the DTD, or some module of the DTD, is the error message: "cannot generate system identifier ... (1) You can ignore the warning message about the duplicate character entity inodot Both the ISO AMS Ordinary Math character entities and the ISO Latin character entities define the inodot entity ... what's wrong In the rest of this section, we'll look at a number of common errors and the messages they produce in SP We've chosen SP for the rest of these examples because that is the same parser...

Ngày tải lên: 21/01/2014, 06:20