Named attribute

We will now explain the meaning of the word identical used above. Physically, it is meant for particles that possess the same intrinsic attributes, namely, static mass, charge, and spin. If such particles possess the same intrinsic attributes (as many as we know so far), then we refer to them as physically identical. There is also another kind of identity, which is commonly refeiTed to as chemical identity [56]. As discussed in the next paragraph, this is an important concept that must be steessed when discussing the permutational properties of nuclei in molecules. 

Given any object(s), you can refer to other related objects by a navigation expression using a dot ( . ) followed by an attribute name. The value of a navigation expression is another object, so you can further navigate to its attributes ... 

Put into a set all the attribute names from the appearances the completed definition should have the same set of attribute names. Include association names and parameterized attributes in the same way. 

Element and attribute names starting with XML, xml, or any other case combination are reserved for possible further usage. It is called a well formedness error if an element name starting with xml is used in a non-W3C defined name. For performance reasons, some XML parsers do not check for this constraint, but nevertheless it is very imprudent to use such names. When searching for names of containers for some XML data, it is tempting to use such names, so this error is surprisingly common. 

Classes have attributes. An attribute is used to describe some property common to all objects of the corresponding class (where property values can be and usually are different). An attribute can have a type - a set of potentially allowed values for this attribute. On diagrams, attributes are shown in the form (attribute name) (attribute type). 

The mediated schema is the set of schema terms (e.g., relations, attribute names) in which queries are posed. They do not necessarily cover all the attributes appearing in any of the sources, but rather the aspects of the domain that are important for the integration application. When domains are broad and there are multiple perspectives on them (e.g., a domain in science that is constantly evolving), there will be uncertainty about which is the correct mediated schema and about the meaning of its terms. Also, when the mediated schema is created automatically by inspecting the sources in a pay-as-you-go system, there will be uncertainty about the mediated schema. 

Creating multiple mediated schemas The creation of the multiple mediated schemas constituting the p-med-schema can be divided conceptually into three steps. First, we remove infrequent attributes from the set of all source attributes, that is, attribute names that do not appear in a large fraction of source tables. This step ensures that our mediated schema contains only information that is relevant and central to the domain. In the second step, we construct a weighted graph whose nodes are the attributes that survived the filter of the first step. An edge in the graph is labeled... 

The line iq from the attribute name of the Public-Company table to the attribute name of the Company table represents a correspondence declaring that the latter has to be populated with values from the former. Its tgd representation is ... 

TD STYLE=" COLS PAN 2 "xlMGxxsl attribute name="src"xxsl value-of select=" src" /x/xsl attribute>... 

Assess each functional group s physicochemical attributes, namely ... 

Tctble 2 shows the relative rankings of all four flavor attributes namely strength and desirability of aroma cuid flavor as influenced by roasting time. This teible illi istrates the average flavor score for each attribute. The optimimi samples chosen on the basis of the mean value for desirability of aroma and flavor were Runner 1 Medium and Spanish Dark. 

Peanuts roasted for various lengths of time can be successfully rated by hedonic scaling if the evaluation is separated into four sensory attributes namely strength and desirability of aroma and flavor. Panelists did readily agree on the intensity of aroma and flavor but not desirability. 

A relation schema R(Ai,..., A ) describes a relation R of degree n by enumerating the n-attributes Ai,..., A that characterize R. An attribute names a role played by some domain D in describing the entity modeled by R. The domain D associated with an attribute A is called the domain of A and is denoted by dom(A) = D. A relational database schema is a set of relation schemas plus the following relational integrity constraints ... 

As a consequence of the central role that relations retain in object-relational data models, one crucial difference with respect to the object-oriented case is that the role played by object identity is relaxed to an optional, rather than mandatory, feature. Thus, an object-relational DBMS stands in an evolutionary path regarding relational ones, whereas object-oriented ones represent a complete break with the relational approach. In this context, notice that while a tuple of type constructor may allow a relation type to be supported, each tuple will have an identity, and attribute names will be explicitly needed to retrieve and interact with values. 

In relational database, the information is stored in tables that are associated with shared attributes (keys). Any data element (or entity) can be found in the database through the name of the table, the attribute name, and the value of the primary key. Using database, one can create, read, update, or delete the database. The database operations occur at all levels tables, records, and colirmns. 

The Al-containing MAX phases and Ti3SiC2 have another useful attribute, namely that their elastic properties are not a strong function of temperature. For example, at 1273 K the shear and Young s moduli of Ti3AlC2 are about 88% of their room-temperature values [50, 67]. In that respect, their resemblance to the MX binaries is notable. 

A representative sample of SGML is depicted in Fig. 6.3. It defines the entity Axioms, any elements it may have, and entities it may contain. An Axioms entity class may have one or many Rules (unbounded) entities, which may have Attributes entities (0 or many). An Argument entity may have two attributes Name and Description. The entity Rule may have mie and only one Body entity and two attributes. 

Some notational conventions are considered non-terminals are denoted by upper case letters a is class attribute name m is method name pi, P2,---P) are formal parameters ai,a2,...aj are actual parameters and cons is class constructor and c is class name, x and y are program locations that are globally data objects, i.e. object with an address into memory such as variables, class attributes and method parameters... 

Currently, there are 2 types of evaluation that are implementing in this department to ensure that the POs are achieved 1) assessmentof COs will assessthe technical knowledge related to a certain subject using test and final written examinations, 2) assessment based on sub-POs which will assess each component in the assigned PO. Since each PO consists of multiple attributes, the department has introduced the sub component of each PO (i.e. subPOs). The sub-POs wiU be assigned to all departmental subjects based on their credit hours. These sub-POs are formulated to have different levels of difficulty. Certain sub-POs should be achieve in the earlier years of studies, while others have to be achieved in the later years of studies. Currently the department has established 59 subPOs. The example of sub-POs is given in Table 3. Table 3 depicts that the POl is divided into three attributes namely PO 1-la, POl-l-b and POl-lc. Each of the Sub-PO is formulated based on the components in the particular PO. 

In this representation, the internal nodes are labeled by attribute names while the leaves are labeled by class names (see Figure 1). Edges between nodes are labeled by a value or range of values for the attribute corresponding to the parent node s label. This division of an attribute s range is in fact a quantization which results in a de facto finite set of states for that attribute. Each path from the root of the tree to a leaf, corresponds to a classification rule. 

It appears that the notion of elements as basic substances made its comeback in the writing of Mendeleev who insisted that his periodic classification was primarily concerned with this sense of the term element and not as observable simple substances. However, Mendeleev did not merely return to the ancient view whereby the elements as basic substances were completely devoid of properties or characteristics. For Mendeleev a basic substance possessed at least one attribute, namely its atomic weight which served to distinguish it from other elements and which was used to order the elements in a unique sequence. 

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