Multiple values retrieved from a set can be summarizedor aggregatedinto
a single value that can be used in a calculated member. Some of the most useful
analytical formulas created by using multidimensional expressions (MDX)
come from aggregating sets of values. In this module, students learn how to use
aggregation functions to create formulas.
Designed to exploit Oracle 10g's SQL, this book takes a comprehensive look at Oracle 10g's analytical functions, MODEL statements, and regular expressions. In addition, Advanced SQL Functions in Oracle 10g covers collection objects and object-oriented structures and introduces new Oracle 10g topics such as XML and statistical functions. The authors' logical and developmental approach to query building includes a review of older Oracle tools to help in the transition to newer material. This text will teach the reader how to: Format result sets with SQL*Plus reporting tools.
After completing this lesson, you should be able to
do the following:
Identify the available group functions
Describe the use of group functions
Group data using the GROUP BY clause
Include or exclude grouped rows by using the HAVING clause
To improve the interaction between students and an intelligent tutoring system, we developed two Natural Language generators, that we systematically evaluated in a three way comparison that included the original system as well. We found that the generator which intuitively produces the best language does engender the most learning. Speciﬁcally, it appears that functional aggregation is responsible for the improvement.
The molecular biology underlying protein aggregation and neuronal death
in Alzheimer’s disease is not yet completely understood, but small soluble
nonamyloid aggregates of the amyloidb-protein (Ab) have been shown to
play a fundamental neurotoxic role.
TDP-43 (transactive response binding protein of 43 kDa) and FUS (fused
in sarcoma) comprise the neuropathological protein aggregates of distinct
subtypes of the neurodegenerative diseases frontotemporal lobar degen-eration and amyotrophic lateral sclerosis.
Microsoft Office 2007 is the latest-and-greatest version of a long line of versions, starting (not surprisingly) with Version 1. Not that this is
the 2,007th version. Somewhere along the way Microsoft switched from using sequential numbers for versions to using years.
Phần 2 SQL Advanced (bài 11)
SQL Functions SQL có một số lượng lớn các hàm gắn liền với sự tính toán . Cú pháp của Function : Trích: SELECT function(column) FROM table Ở đây chúng ta chỉ vài kiểu cơ bản trong các loại hàm của SQL. Đây là 2 dạng cơ bản : * (Aggregate functions)
If we weight market capitalizations and net earnings for the three S&P categories and
then take the ratio, we have a price-earnings ratio of 19.3 Aggregate earnings and this priceearnings
ratio imply an estimate for the aggregate market capitalization of 1.67 times GNP,
which is close to that for industrials only.
We should note that an estimate of 19 for the price-earnings ratio is significantly higher
than that reported by Fisher, who cites the Standard Statistics Company as the source for
Modern complex dynamical systems1 are highly interconnected and mutually
interdependent, both physically and through a multitude of information
and communication network constraints. The sheer size (i.e., dimensionality)
and complexity of these large-scale dynamical systems often necessitates
a hierarchical decentralized architecture for analyzing and controlling these
systems. Specifically, in the analysis and control-system design of complex
large-scale dynamical systems it is often desirable to treat the overall system
as a collection of interconnected subsystems.
As bandwidth needs have increased, enterprise customers have found it more economical to
aggregate traffic from remote offices and have it backhauled to the data center via a DS3.
For the carrier, this presents a problem. The carrier must be able to access the DS1s within
the DS3 and then cross-connect them to the appropriate VT1.5s within the SONET payload.
Traditionally, this operation has been performed using a Digital Cross-Connect System (DCS)
and a SONET ADM. Obviously, requiring two separate devices for this function increases
CAPEX and OPEX for the carrier.
Assume a policy with a $2 million premium that reimburses the policyholder when aggregate
losses for the calendar year exceed $10 million. Assume that the losses covered by the policy are
generally low severity/high frequency, with minimal catastrophe potential (i.e., the policy is
meant to cover mostly pricing risk, not large loss risk). Also assume that the expected losses are
$8 million, and that the expected losses normally occur evenly throughout the year.
After one quarter, losses would have to be 500% of expected for attachment to occur.
Our aim is to contribute to the above literature by proposing a life-cycle model with
individual income uncertainty that can be used to assess how various macroeconomic
factors a®ect the equilibrium value of household credit. We show that its value de-
pends on (i) the lending-deposit interest rate spread, (ii) individual income uncertainty,
(iii) individual productivity persistence, and (iv) the generosity of the pension system.
This paper describes the design of the Gamma database machine and the techniques employed in its imple-
mentation. Gamma is a relational database machine currently operating on an Intel iPSC/2 hypercube with 32 pro-
cessors and 32 disk drives. Gamma employs three key technical ideas which enable the architecture to be scaled to
100s of processors. First, all relations are horizontally partitioned across multiple disk drives enabling relations to
be scanned in parallel.
Fragile X mental retardation protein (FMRP) is an RNA binding protein
necessary for correct spatiotemporal control of neuronal gene expression in
humans. Lack of functional FMRP causes fragile X mental retardation,
which is the most common inherited neurodevelopmental disorder in
Areas for Improvement: The audit assessment points to numerous areas for potential improvement.
However, given its size, resources, and the fact that it is functioning reasonably well under the current
model, the hypothetical organization chooses three main areas for development and improvement. The
top priority, because it affects all others, is making sure that communications resources are a distinct
budget line item in every grant proposal. The organization will also develop a communications strategy
for the overall organization rather than only for specific projects.
Another important benefit is associated with the creation of multidimensional
network effects due to the new possibilities of product creation in the clouds, that
is between companies exploiting in different ways the potentialities of cloud com-
puting through the same platform or different ones. This is related to another new
possibility, the rapid adoption of changes: it is not uncommon, that applications in
the clouds are modified on a daily base (to accommodate new requirements, or en-
able new economic venues), which is impossible with on-premise solutions.
We use data from the Expenditure and Food Survey (EFS), which is administered every
year in the UK. The annual sample includes between six and seven thousand households.
For each household, an initial interview collects detailed demographic information.
Immediately after the interview, each household member starts a expenditure diary, in
which they record everything they buy during the next fourteen days. Diary expenditures
are aggregated to “diary weeks” in the data, for reasons of confidentiality, resulting in
two seven-day aggregates of expenditure for each individual.
A material weakness is a condition in which the design or operation of one or more internal control
components does not reduce to a relatively low level the risk that noncompliance with applicable
requirements of laws, regulations, contracts, and grants that would be material in relation to a major
federal program being audited may occur and not be detected within a timely period by employees in the
normal course of performing their assigned functions.