What are the advantages and limitations of Relational Database Model? Advantages: he relational database model was first introduced by E.F. Codd of IBM in 1969. In the relational model‚ data are structured into tables (i.e.‚ "relations") consisting of rows and columns. Each row contains a single record comprised of individual data elements (or "attributes") organized in columns containing elements of the same kind according to the rules defined for that column. Alternate database models include
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2. “Root” is the user name or account that by default has access to all commands and files on a Linux OS. It is also referred to as the root account‚ root user and the superuser. 3. It is intended primarily for workstation use--i.e.‚ personal computing on a Linux box. 4. “p” for primary‚”e” for extended‚ and “l” for logical partitions 5. a. Make it easier to recover a corrupted file system or operating system installation. b. Smaller file systems are more efficient c. Separation of the operating
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discover which ratio of an acid and base reaction produced the most amount of carbon dioxide gas (CO2) without leaving leftover reactants. 5 varying amounts of bases were added to a constant amount of acid (10 ml) to better understand which ratio was the most efficient. RESULTS Data collected from the lab suggests that the ratio of acid to base that produced the most carbon dioxide gas (CO2) was 1:0.5. This means that for every one mole of acid‚ 0.5 moles of base would be added. The ratio produced
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The Rise of Cloud Computing in Telecommunication Industry Introduction “There was a time when every household‚ town‚ farm or village had its own water well. Today‚ shared public utilities give us access to clean water by simply turning on the tap; cloud computing works in a similar fashion.” That was the analogy used by Vivek Kundra‚ Federal Chief Information Officer (CIO) of the United States Government to depict the use of cloud computing in today’s society. As the corporate world has embarked
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Base Ball Score Card Template: Attendance: It measures whether all players of a team is present for each day. It is the main part of game to measure the performance of teams during basket ball competition. It will be helpful to store information about players. It will be stored in an excel document to fulfill the needs and requirements of players. Scorer: It keeps track information about scorer. The scorer information will be stored separately as each team score and highest and lowest score. It
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Acids and Bases Mirza Hasan Mammadov Acids and bases are really important in our daily day life. So let’s start with telling the definitions of them. Starting with acids‚ they are a substance which dissociates in water in order to produce one or more hydrogen ions. Also we can write H+ instead of hydrogen ion. Bases have the same definition‚ although the difference is that it firm hydroxide ions instead of hydrogen ions. We can write OH- instead of hydroxide ion. All alkali is bases but not
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Acid-base titration Aim To study the titration curve of a strong base-strong acid‚ strong base-weak acid and weak acid-strong base titrations Introduction Acid-base titrations are based on the neutralization reaction between the analyte and an acidic or basic titrant. When an acid and a base are present in a stoichiometric amount e.g. 1 mole HCl added to 1 mole NaOH‚ this means that the equivalent point has been reached in an acid-base system. The end point of an acid-base titration can be
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3 4.3 Conversion Between Number Bases 169 Conversion Between Number Bases Although the numeration systems discussed in the opening section were all base ten‚ other bases have occurred historically. For example‚ the ancient Babylonians used 60 as their base. The Mayan Indians of Central America and Mexico used 20. In this section we consider bases other than ten‚ but we use the familiar HinduArabic symbols. We will consistently indicate bases other than ten with a spelled-out subscript
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Bananas Beaches and Bases The fourth chapter of the book “Base Women” elucidates how women have been exploited for the endurance of the military bases in the country or overseas. How women as girlfriends‚ wives‚ prostitutes assisted militia keep serving the army. States kept wives contented in order to offer constancy to the family of the soldier by bringing wife alongside out of the country assignments and state itself talking care of the needs of the wives by giving them exceptional privileges
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Equilibria 1. Identify the acid/base and their conjugate base/acid‚ and which definition you use to determine(Bronsted‚ Arrhenius or Lewis): a. HCO3- + H+ ↔ H2CO3 Base conj acid: Bronsted b. HCO3- ↔ CO32- + H+ Acid conj base : Arrhenius c. CH3NH2 + H2O ↔ CH3NH3+ + OHBase acid conj acid conj base : Lewis d. C6H5OH + H2O ↔ C6H5O- + H3O+ Acid base conj base conj acid : Lewis‚ Arrhenius‚ Bronsted e. H2O + H2O ↔ H3O + + OHAcid base conj acid conj base - 2. Assuming Kw = 1x10-14‚
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